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Finding the Fourth Proportional to 73,532.30, 100,813.62 and 72,203.69

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Solution

The fourth proportional to 73,532.30, 100,813.62 and 72,203.69 is: 98,992.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,532.30 : 100,813.62 = 72,203.69 : x
  2. Step 2: Convert to fraction form
    73,532.30/100,813.62 = 72,203.69/x
  3. Step 3: Cross multiply
    73,532.30x = 100,813.62 × 72,203.69
  4. Step 4: Simplify right side
    73,532.30x = 7,279,114,862.19
  5. Step 5: Solve for x
    x = 7,279,114,862.19/73,532.30
  6. Step 6: Final answer
    x = 98,992.08

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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.