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Finding the Fourth Proportional to 96,739, 133,508.21 and 53,726.79

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Solution

The fourth proportional to 96,739, 133,508.21 and 53,726.79 is: 74,147.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,739 : 133,508.21 = 53,726.79 : x
  2. Step 2: Convert to fraction form
    96,739/133,508.21 = 53,726.79/x
  3. Step 3: Cross multiply
    96,739x = 133,508.21 × 53,726.79
  4. Step 4: Simplify right side
    96,739x = 7,172,967,561.95
  5. Step 5: Solve for x
    x = 7,172,967,561.95/96,739
  6. Step 6: Final answer
    x = 74,147.63

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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.