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Finding the Fourth Proportional to 359,766.48, 539,555.70 and 106,978.90

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Solution

The fourth proportional to 359,766.48, 539,555.70 and 106,978.90 is: 160,440.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,766.48 : 539,555.70 = 106,978.90 : x
  2. Step 2: Convert to fraction form
    359,766.48/539,555.70 = 106,978.90/x
  3. Step 3: Cross multiply
    359,766.48x = 539,555.70 × 106,978.90
  4. Step 4: Simplify right side
    359,766.48x = 57,721,075,274.73
  5. Step 5: Solve for x
    x = 57,721,075,274.73/359,766.48
  6. Step 6: Final answer
    x = 160,440.39

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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.