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Finding the Fourth Proportional to 18,212.60, 25,133.11 and 10,254.85

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Solution

The fourth proportional to 18,212.60, 25,133.11 and 10,254.85 is: 14,151.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,212.60 : 25,133.11 = 10,254.85 : x
  2. Step 2: Convert to fraction form
    18,212.60/25,133.11 = 10,254.85/x
  3. Step 3: Cross multiply
    18,212.60x = 25,133.11 × 10,254.85
  4. Step 4: Simplify right side
    18,212.60x = 257,736,184.61
  5. Step 5: Solve for x
    x = 257,736,184.61/18,212.60
  6. Step 6: Final answer
    x = 14,151.53

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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.