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Finding the Fourth Proportional to 18,701.92, 25,756.14 and 18,293.68

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Solution

The fourth proportional to 18,701.92, 25,756.14 and 18,293.68 is: 25,193.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,701.92 : 25,756.14 = 18,293.68 : x
  2. Step 2: Convert to fraction form
    18,701.92/25,756.14 = 18,293.68/x
  3. Step 3: Cross multiply
    18,701.92x = 25,756.14 × 18,293.68
  4. Step 4: Simplify right side
    18,701.92x = 471,174,583.20
  5. Step 5: Solve for x
    x = 471,174,583.20/18,701.92
  6. Step 6: Final answer
    x = 25,193.92

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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.