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Finding the Fourth Proportional to 85,376.82, 117,828.12 and 60,833.82

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Solution

The fourth proportional to 85,376.82, 117,828.12 and 60,833.82 is: 83,956.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,376.82 : 117,828.12 = 60,833.82 : x
  2. Step 2: Convert to fraction form
    85,376.82/117,828.12 = 60,833.82/x
  3. Step 3: Cross multiply
    85,376.82x = 117,828.12 × 60,833.82
  4. Step 4: Simplify right side
    85,376.82x = 7,167,934,643.02
  5. Step 5: Solve for x
    x = 7,167,934,643.02/85,376.82
  6. Step 6: Final answer
    x = 83,956.45

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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.