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Finding the Fourth Proportional to 92,641.88, 139,148.78 and 55,274.87

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Solution

The fourth proportional to 92,641.88, 139,148.78 and 55,274.87 is: 83,023.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,641.88 : 139,148.78 = 55,274.87 : x
  2. Step 2: Convert to fraction form
    92,641.88/139,148.78 = 55,274.87/x
  3. Step 3: Cross multiply
    92,641.88x = 139,148.78 × 55,274.87
  4. Step 4: Simplify right side
    92,641.88x = 7,691,429,753.04
  5. Step 5: Solve for x
    x = 7,691,429,753.04/92,641.88
  6. Step 6: Final answer
    x = 83,023.25

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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.