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Finding the Fourth Proportional to 288,511.76, 398,300.52 and 193,180.88

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Solution

The fourth proportional to 288,511.76, 398,300.52 and 193,180.88 is: 266,692.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,511.76 : 398,300.52 = 193,180.88 : x
  2. Step 2: Convert to fraction form
    288,511.76/398,300.52 = 193,180.88/x
  3. Step 3: Cross multiply
    288,511.76x = 398,300.52 × 193,180.88
  4. Step 4: Simplify right side
    288,511.76x = 76,944,044,958.06
  5. Step 5: Solve for x
    x = 76,944,044,958.06/288,511.76
  6. Step 6: Final answer
    x = 266,692.92

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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.