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Finding the Fourth Proportional to 144,949.40, 217,424.10 and 92,461.40

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Solution

The fourth proportional to 144,949.40, 217,424.10 and 92,461.40 is: 138,692.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,949.40 : 217,424.10 = 92,461.40 : x
  2. Step 2: Convert to fraction form
    144,949.40/217,424.10 = 92,461.40/x
  3. Step 3: Cross multiply
    144,949.40x = 217,424.10 × 92,461.40
  4. Step 4: Simplify right side
    144,949.40x = 20,103,336,679.74
  5. Step 5: Solve for x
    x = 20,103,336,679.74/144,949.40
  6. Step 6: Final answer
    x = 138,692.10

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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.