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Finding the Fourth Proportional to 187,668.80, 258,959.28 and 149,525.12

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Solution

The fourth proportional to 187,668.80, 258,959.28 and 149,525.12 is: 206,325.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,668.80 : 258,959.28 = 149,525.12 : x
  2. Step 2: Convert to fraction form
    187,668.80/258,959.28 = 149,525.12/x
  3. Step 3: Cross multiply
    187,668.80x = 258,959.28 × 149,525.12
  4. Step 4: Simplify right side
    187,668.80x = 38,720,917,417.11
  5. Step 5: Solve for x
    x = 38,720,917,417.11/187,668.80
  6. Step 6: Final answer
    x = 206,325.81

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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.