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Finding the Fourth Proportional to 280,188.66, 386,692.61 and 156,022.14

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Solution

The fourth proportional to 280,188.66, 386,692.61 and 156,022.14 is: 215,328.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,188.66 : 386,692.61 = 156,022.14 : x
  2. Step 2: Convert to fraction form
    280,188.66/386,692.61 = 156,022.14/x
  3. Step 3: Cross multiply
    280,188.66x = 386,692.61 × 156,022.14
  4. Step 4: Simplify right side
    280,188.66x = 60,332,607,754.27
  5. Step 5: Solve for x
    x = 60,332,607,754.27/280,188.66
  6. Step 6: Final answer
    x = 215,328.51

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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.