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Finding the Fourth Proportional to 18,500.73, 25,534.02 and 13,752.20

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Solution

The fourth proportional to 18,500.73, 25,534.02 and 13,752.20 is: 18,980.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,500.73 : 25,534.02 = 13,752.20 : x
  2. Step 2: Convert to fraction form
    18,500.73/25,534.02 = 13,752.20/x
  3. Step 3: Cross multiply
    18,500.73x = 25,534.02 × 13,752.20
  4. Step 4: Simplify right side
    18,500.73x = 351,148,881.08
  5. Step 5: Solve for x
    x = 351,148,881.08/18,500.73
  6. Step 6: Final answer
    x = 18,980.28

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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.