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Finding the Fourth Proportional to 67,480, 101,150.88 and 28,060

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Solution

The fourth proportional to 67,480, 101,150.88 and 28,060 is: 42,061.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,480 : 101,150.88 = 28,060 : x
  2. Step 2: Convert to fraction form
    67,480/101,150.88 = 28,060/x
  3. Step 3: Cross multiply
    67,480x = 101,150.88 × 28,060
  4. Step 4: Simplify right side
    67,480x = 2,838,293,692.80
  5. Step 5: Solve for x
    x = 2,838,293,692.80/67,480
  6. Step 6: Final answer
    x = 42,061.26

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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.