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Finding the Fourth Proportional to 657,098.80, 985,648.20 and 457,644.40

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Solution

The fourth proportional to 657,098.80, 985,648.20 and 457,644.40 is: 686,466.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,098.80 : 985,648.20 = 457,644.40 : x
  2. Step 2: Convert to fraction form
    657,098.80/985,648.20 = 457,644.40/x
  3. Step 3: Cross multiply
    657,098.80x = 985,648.20 × 457,644.40
  4. Step 4: Simplify right side
    657,098.80x = 451,076,379,100.08
  5. Step 5: Solve for x
    x = 451,076,379,100.08/657,098.80
  6. Step 6: Final answer
    x = 686,466.60

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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.