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Finding the Fourth Proportional to 18,407.86, 25,402.89 and 10,024.90

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Solution

The fourth proportional to 18,407.86, 25,402.89 and 10,024.90 is: 13,834.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,407.86 : 25,402.89 = 10,024.90 : x
  2. Step 2: Convert to fraction form
    18,407.86/25,402.89 = 10,024.90/x
  3. Step 3: Cross multiply
    18,407.86x = 25,402.89 × 10,024.90
  4. Step 4: Simplify right side
    18,407.86x = 254,661,431.96
  5. Step 5: Solve for x
    x = 254,661,431.96/18,407.86
  6. Step 6: Final answer
    x = 13,834.39

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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.