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Finding the Fourth Proportional to 127,645.80, 191,488.96 and 38,878.72

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Solution

The fourth proportional to 127,645.80, 191,488.96 and 38,878.72 is: 58,324.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,645.80 : 191,488.96 = 38,878.72 : x
  2. Step 2: Convert to fraction form
    127,645.80/191,488.96 = 38,878.72/x
  3. Step 3: Cross multiply
    127,645.80x = 191,488.96 × 38,878.72
  4. Step 4: Simplify right side
    127,645.80x = 7,444,845,658.93
  5. Step 5: Solve for x
    x = 7,444,845,658.93/127,645.80
  6. Step 6: Final answer
    x = 58,324.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.