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Finding the Fourth Proportional to 18,312.59, 27,468.95 and 5,164.97

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Solution

The fourth proportional to 18,312.59, 27,468.95 and 5,164.97 is: 7,747.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,312.59 : 27,468.95 = 5,164.97 : x
  2. Step 2: Convert to fraction form
    18,312.59/27,468.95 = 5,164.97/x
  3. Step 3: Cross multiply
    18,312.59x = 27,468.95 × 5,164.97
  4. Step 4: Simplify right side
    18,312.59x = 141,876,154.04
  5. Step 5: Solve for x
    x = 141,876,154.04/18,312.59
  6. Step 6: Final answer
    x = 7,747.46

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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.