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Finding the Fourth Proportional to 359,929.21, 539,992.46 and 157,488.63

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Solution

The fourth proportional to 359,929.21, 539,992.46 and 157,488.63 is: 236,276.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,929.21 : 539,992.46 = 157,488.63 : x
  2. Step 2: Convert to fraction form
    359,929.21/539,992.46 = 157,488.63/x
  3. Step 3: Cross multiply
    359,929.21x = 539,992.46 × 157,488.63
  4. Step 4: Simplify right side
    359,929.21x = 85,042,672,735.73
  5. Step 5: Solve for x
    x = 85,042,672,735.73/359,929.21
  6. Step 6: Final answer
    x = 236,276.11

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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.