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Finding the Fourth Proportional to 359,780.22, 539,669.52 and 146,636.82

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Solution

The fourth proportional to 359,780.22, 539,669.52 and 146,636.82 is: 219,954.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,780.22 : 539,669.52 = 146,636.82 : x
  2. Step 2: Convert to fraction form
    359,780.22/539,669.52 = 146,636.82/x
  3. Step 3: Cross multiply
    359,780.22x = 539,669.52 × 146,636.82
  4. Step 4: Simplify right side
    359,780.22x = 79,135,422,263.73
  5. Step 5: Solve for x
    x = 79,135,422,263.73/359,780.22
  6. Step 6: Final answer
    x = 219,954.90

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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.