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Finding the Fourth Proportional to 663,755,217.60, 993,719,638.80 and 663,755,217.60

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Solution

The fourth proportional to 663,755,217.60, 993,719,638.80 and 663,755,217.60 is: 993,719,638.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,755,217.60 : 993,719,638.80 = 663,755,217.60 : x
  2. Step 2: Convert to fraction form
    663,755,217.60/993,719,638.80 = 663,755,217.60/x
  3. Step 3: Cross multiply
    663,755,217.60x = 993,719,638.80 × 663,755,217.60
  4. Step 4: Simplify right side
    663,755,217.60x = 659,586,595,085,087,360
  5. Step 5: Solve for x
    x = 659,586,595,085,087,360/663,755,217.60
  6. Step 6: Final answer
    x = 993,719,638.80

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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.