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Finding the Fourth Proportional to 625,411.84, 863,069.07 and 338,931.91

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Solution

The fourth proportional to 625,411.84, 863,069.07 and 338,931.91 is: 467,726.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,411.84 : 863,069.07 = 338,931.91 : x
  2. Step 2: Convert to fraction form
    625,411.84/863,069.07 = 338,931.91/x
  3. Step 3: Cross multiply
    625,411.84x = 863,069.07 × 338,931.91
  4. Step 4: Simplify right side
    625,411.84x = 292,521,648,357.02
  5. Step 5: Solve for x
    x = 292,521,648,357.02/625,411.84
  6. Step 6: Final answer
    x = 467,726.43

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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.