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Finding the Fourth Proportional to 642,665.57, 958,252.66 and 625,009.73

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Solution

The fourth proportional to 642,665.57, 958,252.66 and 625,009.73 is: 931,926.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,665.57 : 958,252.66 = 625,009.73 : x
  2. Step 2: Convert to fraction form
    642,665.57/958,252.66 = 625,009.73/x
  3. Step 3: Cross multiply
    642,665.57x = 958,252.66 × 625,009.73
  4. Step 4: Simplify right side
    642,665.57x = 598,917,229,944.59
  5. Step 5: Solve for x
    x = 598,917,229,944.59/642,665.57
  6. Step 6: Final answer
    x = 931,926.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.