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Finding the Fourth Proportional to 61,689.96, 85,133.70 and 37,829.79

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Solution

The fourth proportional to 61,689.96, 85,133.70 and 37,829.79 is: 52,206.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,689.96 : 85,133.70 = 37,829.79 : x
  2. Step 2: Convert to fraction form
    61,689.96/85,133.70 = 37,829.79/x
  3. Step 3: Cross multiply
    61,689.96x = 85,133.70 × 37,829.79
  4. Step 4: Simplify right side
    61,689.96x = 3,220,589,992.92
  5. Step 5: Solve for x
    x = 3,220,589,992.92/61,689.96
  6. Step 6: Final answer
    x = 52,206.06

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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.