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Finding the Fourth Proportional to 61,221.74, 84,486.92 and 37,019.30

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Solution

The fourth proportional to 61,221.74, 84,486.92 and 37,019.30 is: 51,087.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,221.74 : 84,486.92 = 37,019.30 : x
  2. Step 2: Convert to fraction form
    61,221.74/84,486.92 = 37,019.30/x
  3. Step 3: Cross multiply
    61,221.74x = 84,486.92 × 37,019.30
  4. Step 4: Simplify right side
    61,221.74x = 3,127,646,030.02
  5. Step 5: Solve for x
    x = 3,127,646,030.02/61,221.74
  6. Step 6: Final answer
    x = 51,087.18

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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.