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Finding the Fourth Proportional to 18,479.68, 25,523.12 and 13,466.40

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Solution

The fourth proportional to 18,479.68, 25,523.12 and 13,466.40 is: 18,599.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,479.68 : 25,523.12 = 13,466.40 : x
  2. Step 2: Convert to fraction form
    18,479.68/25,523.12 = 13,466.40/x
  3. Step 3: Cross multiply
    18,479.68x = 25,523.12 × 13,466.40
  4. Step 4: Simplify right side
    18,479.68x = 343,704,543.17
  5. Step 5: Solve for x
    x = 343,704,543.17/18,479.68
  6. Step 6: Final answer
    x = 18,599.05

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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.