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Finding the Fourth Proportional to 18,620.52, 25,696.76 and 10,123.13

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Solution

The fourth proportional to 18,620.52, 25,696.76 and 10,123.13 is: 13,970.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,620.52 : 25,696.76 = 10,123.13 : x
  2. Step 2: Convert to fraction form
    18,620.52/25,696.76 = 10,123.13/x
  3. Step 3: Cross multiply
    18,620.52x = 25,696.76 × 10,123.13
  4. Step 4: Simplify right side
    18,620.52x = 260,131,462.96
  5. Step 5: Solve for x
    x = 260,131,462.96/18,620.52
  6. Step 6: Final answer
    x = 13,970.15

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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.