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Finding the Fourth Proportional to 61,089.30, 84,303.11 and 37,215.96

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Solution

The fourth proportional to 61,089.30, 84,303.11 and 37,215.96 is: 51,357.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,089.30 : 84,303.11 = 37,215.96 : x
  2. Step 2: Convert to fraction form
    61,089.30/84,303.11 = 37,215.96/x
  3. Step 3: Cross multiply
    61,089.30x = 84,303.11 × 37,215.96
  4. Step 4: Simplify right side
    61,089.30x = 3,137,420,983.56
  5. Step 5: Solve for x
    x = 3,137,420,983.56/61,089.30
  6. Step 6: Final answer
    x = 51,357.95

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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.