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Finding the Fourth Proportional to 927,158.76, 1,391,212.76 and 441,390.64

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Solution

The fourth proportional to 927,158.76, 1,391,212.76 and 441,390.64 is: 662,311.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    927,158.76 : 1,391,212.76 = 441,390.64 : x
  2. Step 2: Convert to fraction form
    927,158.76/1,391,212.76 = 441,390.64/x
  3. Step 3: Cross multiply
    927,158.76x = 1,391,212.76 × 441,390.64
  4. Step 4: Simplify right side
    927,158.76x = 614,068,290,512.57
  5. Step 5: Solve for x
    x = 614,068,290,512.57/927,158.76
  6. Step 6: Final answer
    x = 662,311.91

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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.