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Finding the Fourth Proportional to 359,916.20, 539,096.70 and 313,260.20

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Solution

The fourth proportional to 359,916.20, 539,096.70 and 313,260.20 is: 469,213.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,916.20 : 539,096.70 = 313,260.20 : x
  2. Step 2: Convert to fraction form
    359,916.20/539,096.70 = 313,260.20/x
  3. Step 3: Cross multiply
    359,916.20x = 539,096.70 × 313,260.20
  4. Step 4: Simplify right side
    359,916.20x = 168,877,540,061.34
  5. Step 5: Solve for x
    x = 168,877,540,061.34/359,916.20
  6. Step 6: Final answer
    x = 469,213.50

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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.