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Finding the Fourth Proportional to 60,261.75, 90,274.95 and 28,626.78

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Solution

The fourth proportional to 60,261.75, 90,274.95 and 28,626.78 is: 42,884.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,261.75 : 90,274.95 = 28,626.78 : x
  2. Step 2: Convert to fraction form
    60,261.75/90,274.95 = 28,626.78/x
  3. Step 3: Cross multiply
    60,261.75x = 90,274.95 × 28,626.78
  4. Step 4: Simplify right side
    60,261.75x = 2,584,281,133.16
  5. Step 5: Solve for x
    x = 2,584,281,133.16/60,261.75
  6. Step 6: Final answer
    x = 42,884.27

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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.