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Finding the Fourth Proportional to 18,458.18, 25,472.90 and 10,074.68

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Solution

The fourth proportional to 18,458.18, 25,472.90 and 10,074.68 is: 13,903.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,458.18 : 25,472.90 = 10,074.68 : x
  2. Step 2: Convert to fraction form
    18,458.18/25,472.90 = 10,074.68/x
  3. Step 3: Cross multiply
    18,458.18x = 25,472.90 × 10,074.68
  4. Step 4: Simplify right side
    18,458.18x = 256,631,316.17
  5. Step 5: Solve for x
    x = 256,631,316.17/18,458.18
  6. Step 6: Final answer
    x = 13,903.39

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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.