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Finding the Fourth Proportional to 61,828.84, 85,230.78 and 48,376.74

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Solution

The fourth proportional to 61,828.84, 85,230.78 and 48,376.74 is: 66,687.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,828.84 : 85,230.78 = 48,376.74 : x
  2. Step 2: Convert to fraction form
    61,828.84/85,230.78 = 48,376.74/x
  3. Step 3: Cross multiply
    61,828.84x = 85,230.78 × 48,376.74
  4. Step 4: Simplify right side
    61,828.84x = 4,123,187,284.06
  5. Step 5: Solve for x
    x = 4,123,187,284.06/61,828.84
  6. Step 6: Final answer
    x = 66,687.12

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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.