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Finding the Fourth Proportional to 61,129.36, 91,672.16 and 33,070.16

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Solution

The fourth proportional to 61,129.36, 91,672.16 and 33,070.16 is: 49,593.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,129.36 : 91,672.16 = 33,070.16 : x
  2. Step 2: Convert to fraction form
    61,129.36/91,672.16 = 33,070.16/x
  3. Step 3: Cross multiply
    61,129.36x = 91,672.16 × 33,070.16
  4. Step 4: Simplify right side
    61,129.36x = 3,031,612,998.75
  5. Step 5: Solve for x
    x = 3,031,612,998.75/61,129.36
  6. Step 6: Final answer
    x = 49,593.40

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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.