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Finding the Fourth Proportional to 67,750.85, 93,507.87 and 39,065.31

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Solution

The fourth proportional to 67,750.85, 93,507.87 and 39,065.31 is: 53,916.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,750.85 : 93,507.87 = 39,065.31 : x
  2. Step 2: Convert to fraction form
    67,750.85/93,507.87 = 39,065.31/x
  3. Step 3: Cross multiply
    67,750.85x = 93,507.87 × 39,065.31
  4. Step 4: Simplify right side
    67,750.85x = 3,652,913,928.99
  5. Step 5: Solve for x
    x = 3,652,913,928.99/67,750.85
  6. Step 6: Final answer
    x = 53,916.88

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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.