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Finding the Fourth Proportional to 517,789.60, 714,181.56 and 345,620.76

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Solution

The fourth proportional to 517,789.60, 714,181.56 and 345,620.76 is: 476,710.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,789.60 : 714,181.56 = 345,620.76 : x
  2. Step 2: Convert to fraction form
    517,789.60/714,181.56 = 345,620.76/x
  3. Step 3: Cross multiply
    517,789.60x = 714,181.56 × 345,620.76
  4. Step 4: Simplify right side
    517,789.60x = 246,835,973,545.19
  5. Step 5: Solve for x
    x = 246,835,973,545.19/517,789.60
  6. Step 6: Final answer
    x = 476,710.95

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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.