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Finding the Fourth Proportional to 18,459.80, 25,474.20 and 10,501.85

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Solution

The fourth proportional to 18,459.80, 25,474.20 and 10,501.85 is: 14,492.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,459.80 : 25,474.20 = 10,501.85 : x
  2. Step 2: Convert to fraction form
    18,459.80/25,474.20 = 10,501.85/x
  3. Step 3: Cross multiply
    18,459.80x = 25,474.20 × 10,501.85
  4. Step 4: Simplify right side
    18,459.80x = 267,526,251.57
  5. Step 5: Solve for x
    x = 267,526,251.57/18,459.80
  6. Step 6: Final answer
    x = 14,492.37

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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.