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Finding the Fourth Proportional to 9,348.59, 12,891.13 and 5,991.55

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Solution

The fourth proportional to 9,348.59, 12,891.13 and 5,991.55 is: 8,261.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,348.59 : 12,891.13 = 5,991.55 : x
  2. Step 2: Convert to fraction form
    9,348.59/12,891.13 = 5,991.55/x
  3. Step 3: Cross multiply
    9,348.59x = 12,891.13 × 5,991.55
  4. Step 4: Simplify right side
    9,348.59x = 77,237,849.95
  5. Step 5: Solve for x
    x = 77,237,849.95/9,348.59
  6. Step 6: Final answer
    x = 8,261.98

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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.