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Finding the Fourth Proportional to 70,860.60, 97,787.62 and 39,029.49

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Solution

The fourth proportional to 70,860.60, 97,787.62 and 39,029.49 is: 53,860.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,860.60 : 97,787.62 = 39,029.49 : x
  2. Step 2: Convert to fraction form
    70,860.60/97,787.62 = 39,029.49/x
  3. Step 3: Cross multiply
    70,860.60x = 97,787.62 × 39,029.49
  4. Step 4: Simplify right side
    70,860.60x = 3,816,600,936.91
  5. Step 5: Solve for x
    x = 3,816,600,936.91/70,860.60
  6. Step 6: Final answer
    x = 53,860.69

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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.