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Finding the Fourth Proportional to 18,369.88, 25,346.10 and 13,062.76

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Solution

The fourth proportional to 18,369.88, 25,346.10 and 13,062.76 is: 18,023.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,369.88 : 25,346.10 = 13,062.76 : x
  2. Step 2: Convert to fraction form
    18,369.88/25,346.10 = 13,062.76/x
  3. Step 3: Cross multiply
    18,369.88x = 25,346.10 × 13,062.76
  4. Step 4: Simplify right side
    18,369.88x = 331,090,021.24
  5. Step 5: Solve for x
    x = 331,090,021.24/18,369.88
  6. Step 6: Final answer
    x = 18,023.53

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Double scale
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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.