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Finding the Fourth Proportional to 519,806.76, 717,336.72 and 304,951.56

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Solution

The fourth proportional to 519,806.76, 717,336.72 and 304,951.56 is: 420,835.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,806.76 : 717,336.72 = 304,951.56 : x
  2. Step 2: Convert to fraction form
    519,806.76/717,336.72 = 304,951.56/x
  3. Step 3: Cross multiply
    519,806.76x = 717,336.72 × 304,951.56
  4. Step 4: Simplify right side
    519,806.76x = 218,752,951,809.28
  5. Step 5: Solve for x
    x = 218,752,951,809.28/519,806.76
  6. Step 6: Final answer
    x = 420,835.14

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.