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Finding the Fourth Proportional to 125,711.16, 173,484.34 and 68,353.74

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Solution

The fourth proportional to 125,711.16, 173,484.34 and 68,353.74 is: 94,329.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,711.16 : 173,484.34 = 68,353.74 : x
  2. Step 2: Convert to fraction form
    125,711.16/173,484.34 = 68,353.74/x
  3. Step 3: Cross multiply
    125,711.16x = 173,484.34 × 68,353.74
  4. Step 4: Simplify right side
    125,711.16x = 11,858,303,470.43
  5. Step 5: Solve for x
    x = 11,858,303,470.43/125,711.16
  6. Step 6: Final answer
    x = 94,329.76

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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.