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Finding the Fourth Proportional to 171,768, 236,959.20 and 121,494.72

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Solution

The fourth proportional to 171,768, 236,959.20 and 121,494.72 is: 167,605.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,768 : 236,959.20 = 121,494.72 : x
  2. Step 2: Convert to fraction form
    171,768/236,959.20 = 121,494.72/x
  3. Step 3: Cross multiply
    171,768x = 236,959.20 × 121,494.72
  4. Step 4: Simplify right side
    171,768x = 28,789,291,655.42
  5. Step 5: Solve for x
    x = 28,789,291,655.42/171,768
  6. Step 6: Final answer
    x = 167,605.68

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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.