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Finding the Fourth Proportional to 466,148.80, 699,223.20 and 213,428.80

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Solution

The fourth proportional to 466,148.80, 699,223.20 and 213,428.80 is: 320,143.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    466,148.80 : 699,223.20 = 213,428.80 : x
  2. Step 2: Convert to fraction form
    466,148.80/699,223.20 = 213,428.80/x
  3. Step 3: Cross multiply
    466,148.80x = 699,223.20 × 213,428.80
  4. Step 4: Simplify right side
    466,148.80x = 149,234,368,508.16
  5. Step 5: Solve for x
    x = 149,234,368,508.16/466,148.80
  6. Step 6: Final answer
    x = 320,143.20

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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.