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Finding the Fourth Proportional to 643,586.80, 965,380.20 and 614,062.30

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Solution

The fourth proportional to 643,586.80, 965,380.20 and 614,062.30 is: 921,093.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,586.80 : 965,380.20 = 614,062.30 : x
  2. Step 2: Convert to fraction form
    643,586.80/965,380.20 = 614,062.30/x
  3. Step 3: Cross multiply
    643,586.80x = 965,380.20 × 614,062.30
  4. Step 4: Simplify right side
    643,586.80x = 592,803,585,986.46
  5. Step 5: Solve for x
    x = 592,803,585,986.46/643,586.80
  6. Step 6: Final answer
    x = 921,093.45

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Double scale
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Similar ratio
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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.