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Finding the Fourth Proportional to 25,569.80, 35,286.72 and 14,391.80

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Solution

The fourth proportional to 25,569.80, 35,286.72 and 14,391.80 is: 19,860.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,569.80 : 35,286.72 = 14,391.80 : x
  2. Step 2: Convert to fraction form
    25,569.80/35,286.72 = 14,391.80/x
  3. Step 3: Cross multiply
    25,569.80x = 35,286.72 × 14,391.80
  4. Step 4: Simplify right side
    25,569.80x = 507,839,416.90
  5. Step 5: Solve for x
    x = 507,839,416.90/25,569.80
  6. Step 6: Final answer
    x = 19,860.91

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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.