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Finding the Fourth Proportional to 1,400.56, 1,932.60 and 876.76

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Solution

The fourth proportional to 1,400.56, 1,932.60 and 876.76 is: 1,209.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,400.56 : 1,932.60 = 876.76 : x
  2. Step 2: Convert to fraction form
    1,400.56/1,932.60 = 876.76/x
  3. Step 3: Cross multiply
    1,400.56x = 1,932.60 × 876.76
  4. Step 4: Simplify right side
    1,400.56x = 1,694,426.38
  5. Step 5: Solve for x
    x = 1,694,426.38/1,400.56
  6. Step 6: Final answer
    x = 1,209.82

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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.