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Finding the Fourth Proportional to 18,381.96, 25,365.62 and 10,424.93

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Solution

The fourth proportional to 18,381.96, 25,365.62 and 10,424.93 is: 14,385.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,381.96 : 25,365.62 = 10,424.93 : x
  2. Step 2: Convert to fraction form
    18,381.96/25,365.62 = 10,424.93/x
  3. Step 3: Cross multiply
    18,381.96x = 25,365.62 × 10,424.93
  4. Step 4: Simplify right side
    18,381.96x = 264,434,712.14
  5. Step 5: Solve for x
    x = 264,434,712.14/18,381.96
  6. Step 6: Final answer
    x = 14,385.56

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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.