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Finding the Fourth Proportional to 61,679.51, 85,123.33 and 34,828.61

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Solution

The fourth proportional to 61,679.51, 85,123.33 and 34,828.61 is: 48,066.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,679.51 : 85,123.33 = 34,828.61 : x
  2. Step 2: Convert to fraction form
    61,679.51/85,123.33 = 34,828.61/x
  3. Step 3: Cross multiply
    61,679.51x = 85,123.33 × 34,828.61
  4. Step 4: Simplify right side
    61,679.51x = 2,964,727,262.47
  5. Step 5: Solve for x
    x = 2,964,727,262.47/61,679.51
  6. Step 6: Final answer
    x = 48,066.65

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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.