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Finding the Fourth Proportional to 64,543,999.40, 96,815,999.10 and 64,543,999.40

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Solution

The fourth proportional to 64,543,999.40, 96,815,999.10 and 64,543,999.40 is: 96,815,999.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,543,999.40 : 96,815,999.10 = 64,543,999.40 : x
  2. Step 2: Convert to fraction form
    64,543,999.40/96,815,999.10 = 64,543,999.40/x
  3. Step 3: Cross multiply
    64,543,999.40x = 96,815,999.10 × 64,543,999.40
  4. Step 4: Simplify right side
    64,543,999.40x = 6,248,891,787,820,800
  5. Step 5: Solve for x
    x = 6,248,891,787,820,800/64,543,999.40
  6. Step 6: Final answer
    x = 96,815,999.10

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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.