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Finding the Fourth Proportional to 62,779.85, 86,652.26 and 38,926.97

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Solution

The fourth proportional to 62,779.85, 86,652.26 and 38,926.97 is: 53,729.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,779.85 : 86,652.26 = 38,926.97 : x
  2. Step 2: Convert to fraction form
    62,779.85/86,652.26 = 38,926.97/x
  3. Step 3: Cross multiply
    62,779.85x = 86,652.26 × 38,926.97
  4. Step 4: Simplify right side
    62,779.85x = 3,373,110,239.40
  5. Step 5: Solve for x
    x = 3,373,110,239.40/62,779.85
  6. Step 6: Final answer
    x = 53,729.18

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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.