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Finding the Fourth Proportional to 18,686.18, 28,027.44 and 7,593.53

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Solution

The fourth proportional to 18,686.18, 28,027.44 and 7,593.53 is: 11,389.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,686.18 : 28,027.44 = 7,593.53 : x
  2. Step 2: Convert to fraction form
    18,686.18/28,027.44 = 7,593.53/x
  3. Step 3: Cross multiply
    18,686.18x = 28,027.44 × 7,593.53
  4. Step 4: Simplify right side
    18,686.18x = 212,827,066.33
  5. Step 5: Solve for x
    x = 212,827,066.33/18,686.18
  6. Step 6: Final answer
    x = 11,389.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.