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Finding the Fourth Proportional to 368,934.60, 553,401.90 and 132,301.20

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Solution

The fourth proportional to 368,934.60, 553,401.90 and 132,301.20 is: 198,451.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,934.60 : 553,401.90 = 132,301.20 : x
  2. Step 2: Convert to fraction form
    368,934.60/553,401.90 = 132,301.20/x
  3. Step 3: Cross multiply
    368,934.60x = 553,401.90 × 132,301.20
  4. Step 4: Simplify right side
    368,934.60x = 73,215,735,452.28
  5. Step 5: Solve for x
    x = 73,215,735,452.28/368,934.60
  6. Step 6: Final answer
    x = 198,451.80

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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.