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Finding the Fourth Proportional to 8,612.55, 12,926.91 and 4,233.15

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Solution

The fourth proportional to 8,612.55, 12,926.91 and 4,233.15 is: 6,353.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,612.55 : 12,926.91 = 4,233.15 : x
  2. Step 2: Convert to fraction form
    8,612.55/12,926.91 = 4,233.15/x
  3. Step 3: Cross multiply
    8,612.55x = 12,926.91 × 4,233.15
  4. Step 4: Simplify right side
    8,612.55x = 54,721,549.07
  5. Step 5: Solve for x
    x = 54,721,549.07/8,612.55
  6. Step 6: Final answer
    x = 6,353.70

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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.