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Finding the Fourth Proportional to 101,322.72, 139,076.32 and 96,992.48

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Solution

The fourth proportional to 101,322.72, 139,076.32 and 96,992.48 is: 133,132.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,322.72 : 139,076.32 = 96,992.48 : x
  2. Step 2: Convert to fraction form
    101,322.72/139,076.32 = 96,992.48/x
  3. Step 3: Cross multiply
    101,322.72x = 139,076.32 × 96,992.48
  4. Step 4: Simplify right side
    101,322.72x = 13,489,357,186.07
  5. Step 5: Solve for x
    x = 13,489,357,186.07/101,322.72
  6. Step 6: Final answer
    x = 133,132.60

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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.