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Finding the Fourth Proportional to 18,597.40, 25,655.80 and 11,039.43

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Solution

The fourth proportional to 18,597.40, 25,655.80 and 11,039.43 is: 15,229.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,597.40 : 25,655.80 = 11,039.43 : x
  2. Step 2: Convert to fraction form
    18,597.40/25,655.80 = 11,039.43/x
  3. Step 3: Cross multiply
    18,597.40x = 25,655.80 × 11,039.43
  4. Step 4: Simplify right side
    18,597.40x = 283,225,408.19
  5. Step 5: Solve for x
    x = 283,225,408.19/18,597.40
  6. Step 6: Final answer
    x = 15,229.30

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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.