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Finding the Fourth Proportional to 25,716.32, 38,574.48 and 7,248.32

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Solution

The fourth proportional to 25,716.32, 38,574.48 and 7,248.32 is: 10,872.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,716.32 : 38,574.48 = 7,248.32 : x
  2. Step 2: Convert to fraction form
    25,716.32/38,574.48 = 7,248.32/x
  3. Step 3: Cross multiply
    25,716.32x = 38,574.48 × 7,248.32
  4. Step 4: Simplify right side
    25,716.32x = 279,600,174.87
  5. Step 5: Solve for x
    x = 279,600,174.87/25,716.32
  6. Step 6: Final answer
    x = 10,872.48

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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.