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Finding the Fourth Proportional to 67,957.79, 93,790.10 and 39,672.59

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Solution

The fourth proportional to 67,957.79, 93,790.10 and 39,672.59 is: 54,753.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,957.79 : 93,790.10 = 39,672.59 : x
  2. Step 2: Convert to fraction form
    67,957.79/93,790.10 = 39,672.59/x
  3. Step 3: Cross multiply
    67,957.79x = 93,790.10 × 39,672.59
  4. Step 4: Simplify right side
    67,957.79x = 3,720,895,813.59
  5. Step 5: Solve for x
    x = 3,720,895,813.59/67,957.79
  6. Step 6: Final answer
    x = 54,753.05

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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.