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Finding the Fourth Proportional to 101,326.72, 139,081.80 and 96,996.48

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Solution

The fourth proportional to 101,326.72, 139,081.80 and 96,996.48 is: 133,138.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,326.72 : 139,081.80 = 96,996.48 : x
  2. Step 2: Convert to fraction form
    101,326.72/139,081.80 = 96,996.48/x
  3. Step 3: Cross multiply
    101,326.72x = 139,081.80 × 96,996.48
  4. Step 4: Simplify right side
    101,326.72x = 13,490,445,032.06
  5. Step 5: Solve for x
    x = 13,490,445,032.06/101,326.72
  6. Step 6: Final answer
    x = 133,138.08

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.