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Finding the Fourth Proportional to 614,665.18, 921,471.88 and 235,857.76

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Solution

The fourth proportional to 614,665.18, 921,471.88 and 235,857.76 is: 353,584.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,665.18 : 921,471.88 = 235,857.76 : x
  2. Step 2: Convert to fraction form
    614,665.18/921,471.88 = 235,857.76/x
  3. Step 3: Cross multiply
    614,665.18x = 921,471.88 × 235,857.76
  4. Step 4: Simplify right side
    614,665.18x = 217,336,293,519.79
  5. Step 5: Solve for x
    x = 217,336,293,519.79/614,665.18
  6. Step 6: Final answer
    x = 353,584.85

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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.