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Finding the Fourth Proportional to 185,630.76, 278,401.56 and 85,694.94

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Solution

The fourth proportional to 185,630.76, 278,401.56 and 85,694.94 is: 128,521.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,630.76 : 278,401.56 = 85,694.94 : x
  2. Step 2: Convert to fraction form
    185,630.76/278,401.56 = 85,694.94/x
  3. Step 3: Cross multiply
    185,630.76x = 278,401.56 × 85,694.94
  4. Step 4: Simplify right side
    185,630.76x = 23,857,603,875.75
  5. Step 5: Solve for x
    x = 23,857,603,875.75/185,630.76
  6. Step 6: Final answer
    x = 128,521.82

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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.