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Finding the Fourth Proportional to 125,428.84, 188,077.02 and 55,274.92

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Solution

The fourth proportional to 125,428.84, 188,077.02 and 55,274.92 is: 82,883.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,428.84 : 188,077.02 = 55,274.92 : x
  2. Step 2: Convert to fraction form
    125,428.84/188,077.02 = 55,274.92/x
  3. Step 3: Cross multiply
    125,428.84x = 188,077.02 × 55,274.92
  4. Step 4: Simplify right side
    125,428.84x = 10,395,942,234.34
  5. Step 5: Solve for x
    x = 10,395,942,234.34/125,428.84
  6. Step 6: Final answer
    x = 82,883.19

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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.