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Finding the Fourth Proportional to 18,593.70, 25,655.42 and 11,038.96

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Solution

The fourth proportional to 18,593.70, 25,655.42 and 11,038.96 is: 15,231.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,593.70 : 25,655.42 = 11,038.96 : x
  2. Step 2: Convert to fraction form
    18,593.70/25,655.42 = 11,038.96/x
  3. Step 3: Cross multiply
    18,593.70x = 25,655.42 × 11,038.96
  4. Step 4: Simplify right side
    18,593.70x = 283,209,155.16
  5. Step 5: Solve for x
    x = 283,209,155.16/18,593.70
  6. Step 6: Final answer
    x = 15,231.46

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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.