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Finding the Fourth Proportional to 62,970.88, 86,871.70 and 42,546.35

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Solution

The fourth proportional to 62,970.88, 86,871.70 and 42,546.35 is: 58,694.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,970.88 : 86,871.70 = 42,546.35 : x
  2. Step 2: Convert to fraction form
    62,970.88/86,871.70 = 42,546.35/x
  3. Step 3: Cross multiply
    62,970.88x = 86,871.70 × 42,546.35
  4. Step 4: Simplify right side
    62,970.88x = 3,696,073,753.30
  5. Step 5: Solve for x
    x = 3,696,073,753.30/62,970.88
  6. Step 6: Final answer
    x = 58,694.97

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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.