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Finding the Fourth Proportional to 25,986.92, 35,859.76 and 14,659.20

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Solution

The fourth proportional to 25,986.92, 35,859.76 and 14,659.20 is: 20,228.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,986.92 : 35,859.76 = 14,659.20 : x
  2. Step 2: Convert to fraction form
    25,986.92/35,859.76 = 14,659.20/x
  3. Step 3: Cross multiply
    25,986.92x = 35,859.76 × 14,659.20
  4. Step 4: Simplify right side
    25,986.92x = 525,675,393.79
  5. Step 5: Solve for x
    x = 525,675,393.79/25,986.92
  6. Step 6: Final answer
    x = 20,228.46

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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.