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Finding the Fourth Proportional to 81,395,779,345.80, 122,093,669,018.70 and 81,395,779,345.80

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Solution

The fourth proportional to 81,395,779,345.80, 122,093,669,018.70 and 81,395,779,345.80 is: 122,093,669,018.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,395,779,345.80 : 122,093,669,018.70 = 81,395,779,345.80 : x
  2. Step 2: Convert to fraction form
    81,395,779,345.80/122,093,669,018.70 = 81,395,779,345.80/x
  3. Step 3: Cross multiply
    81,395,779,345.80x = 122,093,669,018.70 × 81,395,779,345.80
  4. Step 4: Simplify right side
    81,395,779,345.80x = 9,937,909,342,965,243,838,464
  5. Step 5: Solve for x
    x = 9,937,909,342,965,243,838,464/81,395,779,345.80
  6. Step 6: Final answer
    x = 122,093,669,018.70

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.