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Finding the Fourth Proportional to 359,385.80, 539,078.70 and 110,035.40

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Solution

The fourth proportional to 359,385.80, 539,078.70 and 110,035.40 is: 165,053.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,385.80 : 539,078.70 = 110,035.40 : x
  2. Step 2: Convert to fraction form
    359,385.80/539,078.70 = 110,035.40/x
  3. Step 3: Cross multiply
    359,385.80x = 539,078.70 × 110,035.40
  4. Step 4: Simplify right side
    359,385.80x = 59,317,740,385.98
  5. Step 5: Solve for x
    x = 59,317,740,385.98/359,385.80
  6. Step 6: Final answer
    x = 165,053.10

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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.