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Finding the Fourth Proportional to 658,853.40, 988,280.10 and 654,916.80

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Solution

The fourth proportional to 658,853.40, 988,280.10 and 654,916.80 is: 982,375.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,853.40 : 988,280.10 = 654,916.80 : x
  2. Step 2: Convert to fraction form
    658,853.40/988,280.10 = 654,916.80/x
  3. Step 3: Cross multiply
    658,853.40x = 988,280.10 × 654,916.80
  4. Step 4: Simplify right side
    658,853.40x = 647,241,240,595.68
  5. Step 5: Solve for x
    x = 647,241,240,595.68/658,853.40
  6. Step 6: Final answer
    x = 982,375.20

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Similar ratio
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1.5x scale

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.