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Finding the Fourth Proportional to 59,989.71, 82,778.45 and 38,178.47

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Solution

The fourth proportional to 59,989.71, 82,778.45 and 38,178.47 is: 52,681.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,989.71 : 82,778.45 = 38,178.47 : x
  2. Step 2: Convert to fraction form
    59,989.71/82,778.45 = 38,178.47/x
  3. Step 3: Cross multiply
    59,989.71x = 82,778.45 × 38,178.47
  4. Step 4: Simplify right side
    59,989.71x = 3,160,353,965.19
  5. Step 5: Solve for x
    x = 3,160,353,965.19/59,989.71
  6. Step 6: Final answer
    x = 52,681.60

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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.