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Finding the Fourth Proportional to 356,711.60, 534,921.48 and 154,319.12

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Solution

The fourth proportional to 356,711.60, 534,921.48 and 154,319.12 is: 231,415.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,711.60 : 534,921.48 = 154,319.12 : x
  2. Step 2: Convert to fraction form
    356,711.60/534,921.48 = 154,319.12/x
  3. Step 3: Cross multiply
    356,711.60x = 534,921.48 × 154,319.12
  4. Step 4: Simplify right side
    356,711.60x = 82,548,612,062.70
  5. Step 5: Solve for x
    x = 82,548,612,062.70/356,711.60
  6. Step 6: Final answer
    x = 231,415.55

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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.