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Finding the Fourth Proportional to 61,561.48, 84,983.20 and 36,064.30

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Solution

The fourth proportional to 61,561.48, 84,983.20 and 36,064.30 is: 49,785.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,561.48 : 84,983.20 = 36,064.30 : x
  2. Step 2: Convert to fraction form
    61,561.48/84,983.20 = 36,064.30/x
  3. Step 3: Cross multiply
    61,561.48x = 84,983.20 × 36,064.30
  4. Step 4: Simplify right side
    61,561.48x = 3,064,859,619.76
  5. Step 5: Solve for x
    x = 3,064,859,619.76/61,561.48
  6. Step 6: Final answer
    x = 49,785.35

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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.