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Finding the Fourth Proportional to 8,770.81, 12,103.95 and 4,792.15

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Solution

The fourth proportional to 8,770.81, 12,103.95 and 4,792.15 is: 6,613.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,770.81 : 12,103.95 = 4,792.15 : x
  2. Step 2: Convert to fraction form
    8,770.81/12,103.95 = 4,792.15/x
  3. Step 3: Cross multiply
    8,770.81x = 12,103.95 × 4,792.15
  4. Step 4: Simplify right side
    8,770.81x = 58,003,943.99
  5. Step 5: Solve for x
    x = 58,003,943.99/8,770.81
  6. Step 6: Final answer
    x = 6,613.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.