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Finding the Fourth Proportional to 70,836.93, 97,759.31 and 39,012.84

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Solution

The fourth proportional to 70,836.93, 97,759.31 and 39,012.84 is: 53,840.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,836.93 : 97,759.31 = 39,012.84 : x
  2. Step 2: Convert to fraction form
    70,836.93/97,759.31 = 39,012.84/x
  3. Step 3: Cross multiply
    70,836.93x = 97,759.31 × 39,012.84
  4. Step 4: Simplify right side
    70,836.93x = 3,813,868,124.48
  5. Step 5: Solve for x
    x = 3,813,868,124.48/70,836.93
  6. Step 6: Final answer
    x = 53,840.11

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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.