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Finding the Fourth Proportional to 8,193,792.70, 12,290,689.05 and 8,193,792.70

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Solution

The fourth proportional to 8,193,792.70, 12,290,689.05 and 8,193,792.70 is: 12,290,689.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,193,792.70 : 12,290,689.05 = 8,193,792.70 : x
  2. Step 2: Convert to fraction form
    8,193,792.70/12,290,689.05 = 8,193,792.70/x
  3. Step 3: Cross multiply
    8,193,792.70x = 12,290,689.05 × 8,193,792.70
  4. Step 4: Simplify right side
    8,193,792.70x = 100,707,358,215,859.94
  5. Step 5: Solve for x
    x = 100,707,358,215,859.94/8,193,792.70
  6. Step 6: Final answer
    x = 12,290,689.05

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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.