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Finding the Fourth Proportional to 64,999.90, 97,305.45 and 38,691.10

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Solution

The fourth proportional to 64,999.90, 97,305.45 and 38,691.10 is: 57,920.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,999.90 : 97,305.45 = 38,691.10 : x
  2. Step 2: Convert to fraction form
    64,999.90/97,305.45 = 38,691.10/x
  3. Step 3: Cross multiply
    64,999.90x = 97,305.45 × 38,691.10
  4. Step 4: Simplify right side
    64,999.90x = 3,764,854,896.50
  5. Step 5: Solve for x
    x = 3,764,854,896.50/64,999.90
  6. Step 6: Final answer
    x = 57,920.93

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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.