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Finding the Fourth Proportional to 472,909.70, 652,631.15 and 258,061.56

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Solution

The fourth proportional to 472,909.70, 652,631.15 and 258,061.56 is: 356,133.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,909.70 : 652,631.15 = 258,061.56 : x
  2. Step 2: Convert to fraction form
    472,909.70/652,631.15 = 258,061.56/x
  3. Step 3: Cross multiply
    472,909.70x = 652,631.15 × 258,061.56
  4. Step 4: Simplify right side
    472,909.70x = 168,419,013,318.75
  5. Step 5: Solve for x
    x = 168,419,013,318.75/472,909.70
  6. Step 6: Final answer
    x = 356,133.55

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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.