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Finding the Fourth Proportional to 625,887.71, 863,725.27 and 339,407.72

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Solution

The fourth proportional to 625,887.71, 863,725.27 and 339,407.72 is: 468,382.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,887.71 : 863,725.27 = 339,407.72 : x
  2. Step 2: Convert to fraction form
    625,887.71/863,725.27 = 339,407.72/x
  3. Step 3: Cross multiply
    625,887.71x = 863,725.27 × 339,407.72
  4. Step 4: Simplify right side
    625,887.71x = 293,155,024,597.08
  5. Step 5: Solve for x
    x = 293,155,024,597.08/625,887.71
  6. Step 6: Final answer
    x = 468,382.78

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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.