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Finding the Fourth Proportional to 25,391.76, 35,040.53 and 14,213.76

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Solution

The fourth proportional to 25,391.76, 35,040.53 and 14,213.76 is: 19,614.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,391.76 : 35,040.53 = 14,213.76 : x
  2. Step 2: Convert to fraction form
    25,391.76/35,040.53 = 14,213.76/x
  3. Step 3: Cross multiply
    25,391.76x = 35,040.53 × 14,213.76
  4. Step 4: Simplify right side
    25,391.76x = 498,057,683.69
  5. Step 5: Solve for x
    x = 498,057,683.69/25,391.76
  6. Step 6: Final answer
    x = 19,614.93

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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.