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Finding the Fourth Proportional to 472,644.60, 709,031.70 and 157,068.60

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Solution

The fourth proportional to 472,644.60, 709,031.70 and 157,068.60 is: 235,624.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,644.60 : 709,031.70 = 157,068.60 : x
  2. Step 2: Convert to fraction form
    472,644.60/709,031.70 = 157,068.60/x
  3. Step 3: Cross multiply
    472,644.60x = 709,031.70 × 157,068.60
  4. Step 4: Simplify right side
    472,644.60x = 111,366,616,474.62
  5. Step 5: Solve for x
    x = 111,366,616,474.62/472,644.60
  6. Step 6: Final answer
    x = 235,624.43

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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.