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Finding the Fourth Proportional to 347,112.90, 519,685.20 and 347,112.90

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Solution

The fourth proportional to 347,112.90, 519,685.20 and 347,112.90 is: 519,685.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,112.90 : 519,685.20 = 347,112.90 : x
  2. Step 2: Convert to fraction form
    347,112.90/519,685.20 = 347,112.90/x
  3. Step 3: Cross multiply
    347,112.90x = 519,685.20 × 347,112.90
  4. Step 4: Simplify right side
    347,112.90x = 180,389,436,859.08
  5. Step 5: Solve for x
    x = 180,389,436,859.08/347,112.90
  6. Step 6: Final answer
    x = 519,685.20

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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.