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Finding the Fourth Proportional to 18,390.69, 25,404.77 and 17,707.93

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Solution

The fourth proportional to 18,390.69, 25,404.77 and 17,707.93 is: 24,461.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,390.69 : 25,404.77 = 17,707.93 : x
  2. Step 2: Convert to fraction form
    18,390.69/25,404.77 = 17,707.93/x
  3. Step 3: Cross multiply
    18,390.69x = 25,404.77 × 17,707.93
  4. Step 4: Simplify right side
    18,390.69x = 449,865,800.29
  5. Step 5: Solve for x
    x = 449,865,800.29/18,390.69
  6. Step 6: Final answer
    x = 24,461.61

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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.