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Finding the Fourth Proportional to 579,672.30, 869,508.45 and 153,207.30

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Solution

The fourth proportional to 579,672.30, 869,508.45 and 153,207.30 is: 229,810.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,672.30 : 869,508.45 = 153,207.30 : x
  2. Step 2: Convert to fraction form
    579,672.30/869,508.45 = 153,207.30/x
  3. Step 3: Cross multiply
    579,672.30x = 869,508.45 × 153,207.30
  4. Step 4: Simplify right side
    579,672.30x = 133,215,041,951.69
  5. Step 5: Solve for x
    x = 133,215,041,951.69/579,672.30
  6. Step 6: Final answer
    x = 229,810.95

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Double scale
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Similar ratio
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1.5x scale

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.