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Finding the Fourth Proportional to 225,455.52, 311,128.68 and 124,853.52

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Solution

The fourth proportional to 225,455.52, 311,128.68 and 124,853.52 is: 172,297.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,455.52 : 311,128.68 = 124,853.52 : x
  2. Step 2: Convert to fraction form
    225,455.52/311,128.68 = 124,853.52/x
  3. Step 3: Cross multiply
    225,455.52x = 311,128.68 × 124,853.52
  4. Step 4: Simplify right side
    225,455.52x = 38,845,510,870.95
  5. Step 5: Solve for x
    x = 38,845,510,870.95/225,455.52
  6. Step 6: Final answer
    x = 172,297.89

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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.