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Finding the Fourth Proportional to 62,879.67, 86,730 and 42,701.52

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Solution

The fourth proportional to 62,879.67, 86,730 and 42,701.52 is: 58,898.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,879.67 : 86,730 = 42,701.52 : x
  2. Step 2: Convert to fraction form
    62,879.67/86,730 = 42,701.52/x
  3. Step 3: Cross multiply
    62,879.67x = 86,730 × 42,701.52
  4. Step 4: Simplify right side
    62,879.67x = 3,703,502,829.60
  5. Step 5: Solve for x
    x = 3,703,502,829.60/62,879.67
  6. Step 6: Final answer
    x = 58,898.25

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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.