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Finding the Fourth Proportional to 23,689.62, 32,690.80 and 13,079.02

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Solution

The fourth proportional to 23,689.62, 32,690.80 and 13,079.02 is: 18,048.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,689.62 : 32,690.80 = 13,079.02 : x
  2. Step 2: Convert to fraction form
    23,689.62/32,690.80 = 13,079.02/x
  3. Step 3: Cross multiply
    23,689.62x = 32,690.80 × 13,079.02
  4. Step 4: Simplify right side
    23,689.62x = 427,563,627.02
  5. Step 5: Solve for x
    x = 427,563,627.02/23,689.62
  6. Step 6: Final answer
    x = 18,048.56

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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.