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Finding the Fourth Proportional to 17,874.74, 24,668.55 and 9,918.51

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Solution

The fourth proportional to 17,874.74, 24,668.55 and 9,918.51 is: 13,688.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,874.74 : 24,668.55 = 9,918.51 : x
  2. Step 2: Convert to fraction form
    17,874.74/24,668.55 = 9,918.51/x
  3. Step 3: Cross multiply
    17,874.74x = 24,668.55 × 9,918.51
  4. Step 4: Simplify right side
    17,874.74x = 244,675,259.86
  5. Step 5: Solve for x
    x = 244,675,259.86/17,874.74
  6. Step 6: Final answer
    x = 13,688.33

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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.