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Finding the Fourth Proportional to 63,021.92, 86,985.04 and 39,166.56

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Solution

The fourth proportional to 63,021.92, 86,985.04 and 39,166.56 is: 54,059.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,021.92 : 86,985.04 = 39,166.56 : x
  2. Step 2: Convert to fraction form
    63,021.92/86,985.04 = 39,166.56/x
  3. Step 3: Cross multiply
    63,021.92x = 86,985.04 × 39,166.56
  4. Step 4: Simplify right side
    63,021.92x = 3,406,904,788.26
  5. Step 5: Solve for x
    x = 3,406,904,788.26/63,021.92
  6. Step 6: Final answer
    x = 54,059.04

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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.