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Finding the Fourth Proportional to 73,022.88, 109,320.75 and 66,019.02

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Solution

The fourth proportional to 73,022.88, 109,320.75 and 66,019.02 is: 98,835.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,022.88 : 109,320.75 = 66,019.02 : x
  2. Step 2: Convert to fraction form
    73,022.88/109,320.75 = 66,019.02/x
  3. Step 3: Cross multiply
    73,022.88x = 109,320.75 × 66,019.02
  4. Step 4: Simplify right side
    73,022.88x = 7,217,248,780.67
  5. Step 5: Solve for x
    x = 7,217,248,780.67/73,022.88
  6. Step 6: Final answer
    x = 98,835.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.