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Finding the Fourth Proportional to 73,122.90, 109,670.48 and 35,645.28

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Solution

The fourth proportional to 73,122.90, 109,670.48 and 35,645.28 is: 53,461.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,122.90 : 109,670.48 = 35,645.28 : x
  2. Step 2: Convert to fraction form
    73,122.90/109,670.48 = 35,645.28/x
  3. Step 3: Cross multiply
    73,122.90x = 109,670.48 × 35,645.28
  4. Step 4: Simplify right side
    73,122.90x = 3,909,234,789.11
  5. Step 5: Solve for x
    x = 3,909,234,789.11/73,122.90
  6. Step 6: Final answer
    x = 53,461.16

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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.