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Finding the Fourth Proportional to 359,917.20, 539,098.20 and 313,261.20

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Solution

The fourth proportional to 359,917.20, 539,098.20 and 313,261.20 is: 469,215.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,917.20 : 539,098.20 = 313,261.20 : x
  2. Step 2: Convert to fraction form
    359,917.20/539,098.20 = 313,261.20/x
  3. Step 3: Cross multiply
    359,917.20x = 539,098.20 × 313,261.20
  4. Step 4: Simplify right side
    359,917.20x = 168,878,549,049.84
  5. Step 5: Solve for x
    x = 168,878,549,049.84/359,917.20
  6. Step 6: Final answer
    x = 469,215.00

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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.