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Finding the Fourth Proportional to 83,663.84, 125,458.92 and 39,303.20

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Solution

The fourth proportional to 83,663.84, 125,458.92 and 39,303.20 is: 58,937.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,663.84 : 125,458.92 = 39,303.20 : x
  2. Step 2: Convert to fraction form
    83,663.84/125,458.92 = 39,303.20/x
  3. Step 3: Cross multiply
    83,663.84x = 125,458.92 × 39,303.20
  4. Step 4: Simplify right side
    83,663.84x = 4,930,937,024.54
  5. Step 5: Solve for x
    x = 4,930,937,024.54/83,663.84
  6. Step 6: Final answer
    x = 58,937.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.