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Finding the Fourth Proportional to 25,918.80, 38,894.20 and 10,334.80

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Solution

The fourth proportional to 25,918.80, 38,894.20 and 10,334.80 is: 15,508.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,918.80 : 38,894.20 = 10,334.80 : x
  2. Step 2: Convert to fraction form
    25,918.80/38,894.20 = 10,334.80/x
  3. Step 3: Cross multiply
    25,918.80x = 38,894.20 × 10,334.80
  4. Step 4: Simplify right side
    25,918.80x = 401,963,778.16
  5. Step 5: Solve for x
    x = 401,963,778.16/25,918.80
  6. Step 6: Final answer
    x = 15,508.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.