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Finding the Fourth Proportional to 643,587.80, 965,381.70 and 614,063.30

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Solution

The fourth proportional to 643,587.80, 965,381.70 and 614,063.30 is: 921,094.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,587.80 : 965,381.70 = 614,063.30 : x
  2. Step 2: Convert to fraction form
    643,587.80/965,381.70 = 614,063.30/x
  3. Step 3: Cross multiply
    643,587.80x = 965,381.70 × 614,063.30
  4. Step 4: Simplify right side
    643,587.80x = 592,805,472,461.61
  5. Step 5: Solve for x
    x = 592,805,472,461.61/643,587.80
  6. Step 6: Final answer
    x = 921,094.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.