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Finding the Fourth Proportional to 359,129.64, 538,853.14 and 188,310.56

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Solution

The fourth proportional to 359,129.64, 538,853.14 and 188,310.56 is: 282,549.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,129.64 : 538,853.14 = 188,310.56 : x
  2. Step 2: Convert to fraction form
    359,129.64/538,853.14 = 188,310.56/x
  3. Step 3: Cross multiply
    359,129.64x = 538,853.14 × 188,310.56
  4. Step 4: Simplify right side
    359,129.64x = 101,471,736,551.16
  5. Step 5: Solve for x
    x = 101,471,736,551.16/359,129.64
  6. Step 6: Final answer
    x = 282,549.04

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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.