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Finding the Fourth Proportional to 101,632.57, 140,276.28 and 67,642.51

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Solution

The fourth proportional to 101,632.57, 140,276.28 and 67,642.51 is: 93,362.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,632.57 : 140,276.28 = 67,642.51 : x
  2. Step 2: Convert to fraction form
    101,632.57/140,276.28 = 67,642.51/x
  3. Step 3: Cross multiply
    101,632.57x = 140,276.28 × 67,642.51
  4. Step 4: Simplify right side
    101,632.57x = 9,488,639,672.66
  5. Step 5: Solve for x
    x = 9,488,639,672.66/101,632.57
  6. Step 6: Final answer
    x = 93,362.19

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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.