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Finding the Fourth Proportional to 344,130.90, 516,023.55 and 156,930.90

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Solution

The fourth proportional to 344,130.90, 516,023.55 and 156,930.90 is: 235,317.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,130.90 : 516,023.55 = 156,930.90 : x
  2. Step 2: Convert to fraction form
    344,130.90/516,023.55 = 156,930.90/x
  3. Step 3: Cross multiply
    344,130.90x = 516,023.55 × 156,930.90
  4. Step 4: Simplify right side
    344,130.90x = 80,980,040,122.70
  5. Step 5: Solve for x
    x = 80,980,040,122.70/344,130.90
  6. Step 6: Final answer
    x = 235,317.55

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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.