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Finding the Fourth Proportional to 59,905.80, 82,696.52 and 38,695.40

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Solution

The fourth proportional to 59,905.80, 82,696.52 and 38,695.40 is: 53,416.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,905.80 : 82,696.52 = 38,695.40 : x
  2. Step 2: Convert to fraction form
    59,905.80/82,696.52 = 38,695.40/x
  3. Step 3: Cross multiply
    59,905.80x = 82,696.52 × 38,695.40
  4. Step 4: Simplify right side
    59,905.80x = 3,199,974,920.01
  5. Step 5: Solve for x
    x = 3,199,974,920.01/59,905.80
  6. Step 6: Final answer
    x = 53,416.78

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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.