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Finding the Fourth Proportional to 356,505.48, 534,731.49 and 103,787.91

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Solution

The fourth proportional to 356,505.48, 534,731.49 and 103,787.91 is: 155,674.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,505.48 : 534,731.49 = 103,787.91 : x
  2. Step 2: Convert to fraction form
    356,505.48/534,731.49 = 103,787.91/x
  3. Step 3: Cross multiply
    356,505.48x = 534,731.49 × 103,787.91
  4. Step 4: Simplify right side
    356,505.48x = 55,498,663,758.29
  5. Step 5: Solve for x
    x = 55,498,663,758.29/356,505.48
  6. Step 6: Final answer
    x = 155,674.08

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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.