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Finding the Fourth Proportional to 112,052.80, 154,630.80 and 61,065.94

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Solution

The fourth proportional to 112,052.80, 154,630.80 and 61,065.94 is: 84,269.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,052.80 : 154,630.80 = 61,065.94 : x
  2. Step 2: Convert to fraction form
    112,052.80/154,630.80 = 61,065.94/x
  3. Step 3: Cross multiply
    112,052.80x = 154,630.80 × 61,065.94
  4. Step 4: Simplify right side
    112,052.80x = 9,442,675,154.95
  5. Step 5: Solve for x
    x = 9,442,675,154.95/112,052.80
  6. Step 6: Final answer
    x = 84,269.87

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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.