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Finding the Fourth Proportional to 18,357.86, 25,337.93 and 10,404.47

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Solution

The fourth proportional to 18,357.86, 25,337.93 and 10,404.47 is: 14,360.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,357.86 : 25,337.93 = 10,404.47 : x
  2. Step 2: Convert to fraction form
    18,357.86/25,337.93 = 10,404.47/x
  3. Step 3: Cross multiply
    18,357.86x = 25,337.93 × 10,404.47
  4. Step 4: Simplify right side
    18,357.86x = 263,627,553.84
  5. Step 5: Solve for x
    x = 263,627,553.84/18,357.86
  6. Step 6: Final answer
    x = 14,360.48

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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.