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Finding the Fourth Proportional to 18,466.74, 27,700.08 and 5,319.18

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Solution

The fourth proportional to 18,466.74, 27,700.08 and 5,319.18 is: 7,978.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,466.74 : 27,700.08 = 5,319.18 : x
  2. Step 2: Convert to fraction form
    18,466.74/27,700.08 = 5,319.18/x
  3. Step 3: Cross multiply
    18,466.74x = 27,700.08 × 5,319.18
  4. Step 4: Simplify right side
    18,466.74x = 147,341,711.53
  5. Step 5: Solve for x
    x = 147,341,711.53/18,466.74
  6. Step 6: Final answer
    x = 7,978.76

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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.