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Finding the Fourth Proportional to 101,519.79, 140,036.02 and 65,209.01

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Solution

The fourth proportional to 101,519.79, 140,036.02 and 65,209.01 is: 89,949.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,519.79 : 140,036.02 = 65,209.01 : x
  2. Step 2: Convert to fraction form
    101,519.79/140,036.02 = 65,209.01/x
  3. Step 3: Cross multiply
    101,519.79x = 140,036.02 × 65,209.01
  4. Step 4: Simplify right side
    101,519.79x = 9,131,610,415.61
  5. Step 5: Solve for x
    x = 9,131,610,415.61/101,519.79
  6. Step 6: Final answer
    x = 89,949.07

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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.