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Finding the Fourth Proportional to 62,765.52, 86,656.98 and 38,917.50

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Solution

The fourth proportional to 62,765.52, 86,656.98 and 38,917.50 is: 53,731.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,765.52 : 86,656.98 = 38,917.50 : x
  2. Step 2: Convert to fraction form
    62,765.52/86,656.98 = 38,917.50/x
  3. Step 3: Cross multiply
    62,765.52x = 86,656.98 × 38,917.50
  4. Step 4: Simplify right side
    62,765.52x = 3,372,473,019.15
  5. Step 5: Solve for x
    x = 3,372,473,019.15/62,765.52
  6. Step 6: Final answer
    x = 53,731.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.