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Finding the Fourth Proportional to 651,711.80, 977,567.70 and 440,204.60

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Solution

The fourth proportional to 651,711.80, 977,567.70 and 440,204.60 is: 660,306.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,711.80 : 977,567.70 = 440,204.60 : x
  2. Step 2: Convert to fraction form
    651,711.80/977,567.70 = 440,204.60/x
  3. Step 3: Cross multiply
    651,711.80x = 977,567.70 × 440,204.60
  4. Step 4: Simplify right side
    651,711.80x = 430,329,798,351.42
  5. Step 5: Solve for x
    x = 430,329,798,351.42/651,711.80
  6. Step 6: Final answer
    x = 660,306.90

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Double scale
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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.