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Finding the Fourth Proportional to 908,085,656.80, 1,359,976,149.15 and 908,085,656.80

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Solution

The fourth proportional to 908,085,656.80, 1,359,976,149.15 and 908,085,656.80 is: 1,359,976,149.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,085,656.80 : 1,359,976,149.15 = 908,085,656.80 : x
  2. Step 2: Convert to fraction form
    908,085,656.80/1,359,976,149.15 = 908,085,656.80/x
  3. Step 3: Cross multiply
    908,085,656.80x = 1,359,976,149.15 × 908,085,656.80
  4. Step 4: Simplify right side
    908,085,656.80x = 1,234,974,834,633,212,416
  5. Step 5: Solve for x
    x = 1,234,974,834,633,212,416/908,085,656.80
  6. Step 6: Final answer
    x = 1,359,976,149.15

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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.