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Finding the Fourth Proportional to 57,897.36, 86,816.88 and 28,270.80

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Solution

The fourth proportional to 57,897.36, 86,816.88 and 28,270.80 is: 42,391.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,897.36 : 86,816.88 = 28,270.80 : x
  2. Step 2: Convert to fraction form
    57,897.36/86,816.88 = 28,270.80/x
  3. Step 3: Cross multiply
    57,897.36x = 86,816.88 × 28,270.80
  4. Step 4: Simplify right side
    57,897.36x = 2,454,382,651.10
  5. Step 5: Solve for x
    x = 2,454,382,651.10/57,897.36
  6. Step 6: Final answer
    x = 42,391.96

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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.