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Finding the Fourth Proportional to 1,476.48, 2,037.40 and 878.92

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Solution

The fourth proportional to 1,476.48, 2,037.40 and 878.92 is: 1,212.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,476.48 : 2,037.40 = 878.92 : x
  2. Step 2: Convert to fraction form
    1,476.48/2,037.40 = 878.92/x
  3. Step 3: Cross multiply
    1,476.48x = 2,037.40 × 878.92
  4. Step 4: Simplify right side
    1,476.48x = 1,790,711.61
  5. Step 5: Solve for x
    x = 1,790,711.61/1,476.48
  6. Step 6: Final answer
    x = 1,212.82

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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.