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Finding the Fourth Proportional to 71,363.92, 98,456.88 and 42,663.64

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Solution

The fourth proportional to 71,363.92, 98,456.88 and 42,663.64 is: 58,860.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,363.92 : 98,456.88 = 42,663.64 : x
  2. Step 2: Convert to fraction form
    71,363.92/98,456.88 = 42,663.64/x
  3. Step 3: Cross multiply
    71,363.92x = 98,456.88 × 42,663.64
  4. Step 4: Simplify right side
    71,363.92x = 4,200,528,883.84
  5. Step 5: Solve for x
    x = 4,200,528,883.84/71,363.92
  6. Step 6: Final answer
    x = 58,860.68

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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.