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Finding the Fourth Proportional to 359,418.07, 539,034.84 and 106,638.76

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Solution

The fourth proportional to 359,418.07, 539,034.84 and 106,638.76 is: 159,930.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,418.07 : 539,034.84 = 106,638.76 : x
  2. Step 2: Convert to fraction form
    359,418.07/539,034.84 = 106,638.76/x
  3. Step 3: Cross multiply
    359,418.07x = 539,034.84 × 106,638.76
  4. Step 4: Simplify right side
    359,418.07x = 57,482,006,934.40
  5. Step 5: Solve for x
    x = 57,482,006,934.40/359,418.07
  6. Step 6: Final answer
    x = 159,930.77

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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.