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Finding the Fourth Proportional to 112,628.70, 155,412.22 and 67,297.11

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Solution

The fourth proportional to 112,628.70, 155,412.22 and 67,297.11 is: 92,860.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,628.70 : 155,412.22 = 67,297.11 : x
  2. Step 2: Convert to fraction form
    112,628.70/155,412.22 = 67,297.11/x
  3. Step 3: Cross multiply
    112,628.70x = 155,412.22 × 67,297.11
  4. Step 4: Simplify right side
    112,628.70x = 10,458,793,264.68
  5. Step 5: Solve for x
    x = 10,458,793,264.68/112,628.70
  6. Step 6: Final answer
    x = 92,860.82

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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.