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Finding the Fourth Proportional to 25,865.28, 35,660.04 and 16,897.20

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Solution

The fourth proportional to 25,865.28, 35,660.04 and 16,897.20 is: 23,295.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,865.28 : 35,660.04 = 16,897.20 : x
  2. Step 2: Convert to fraction form
    25,865.28/35,660.04 = 16,897.20/x
  3. Step 3: Cross multiply
    25,865.28x = 35,660.04 × 16,897.20
  4. Step 4: Simplify right side
    25,865.28x = 602,554,827.89
  5. Step 5: Solve for x
    x = 602,554,827.89/25,865.28
  6. Step 6: Final answer
    x = 23,295.89

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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.