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Finding the Fourth Proportional to 117,600.95, 176,391.02 and 42,721.74

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Solution

The fourth proportional to 117,600.95, 176,391.02 and 42,721.74 is: 64,078.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,600.95 : 176,391.02 = 42,721.74 : x
  2. Step 2: Convert to fraction form
    117,600.95/176,391.02 = 42,721.74/x
  3. Step 3: Cross multiply
    117,600.95x = 176,391.02 × 42,721.74
  4. Step 4: Simplify right side
    117,600.95x = 7,535,731,401.58
  5. Step 5: Solve for x
    x = 7,535,731,401.58/117,600.95
  6. Step 6: Final answer
    x = 64,078.83

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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.