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Finding the Fourth Proportional to 651,193,200.60, 976,789,800.90 and 392,912,874.60

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Solution

The fourth proportional to 651,193,200.60, 976,789,800.90 and 392,912,874.60 is: 589,369,311.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,193,200.60 : 976,789,800.90 = 392,912,874.60 : x
  2. Step 2: Convert to fraction form
    651,193,200.60/976,789,800.90 = 392,912,874.60/x
  3. Step 3: Cross multiply
    651,193,200.60x = 976,789,800.90 × 392,912,874.60
  4. Step 4: Simplify right side
    651,193,200.60x = 383,793,288,551,580,672
  5. Step 5: Solve for x
    x = 383,793,288,551,580,672/651,193,200.60
  6. Step 6: Final answer
    x = 589,369,311.90

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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.