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Finding the Fourth Proportional to 359,012.32, 538,618.26 and 156,626.12

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Solution

The fourth proportional to 359,012.32, 538,618.26 and 156,626.12 is: 234,982.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,012.32 : 538,618.26 = 156,626.12 : x
  2. Step 2: Convert to fraction form
    359,012.32/538,618.26 = 156,626.12/x
  3. Step 3: Cross multiply
    359,012.32x = 538,618.26 × 156,626.12
  4. Step 4: Simplify right side
    359,012.32x = 84,361,688,224.95
  5. Step 5: Solve for x
    x = 84,361,688,224.95/359,012.32
  6. Step 6: Final answer
    x = 234,982.71

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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.