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Finding the Fourth Proportional to 67,172.72, 92,698.35 and 36,957.40

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Solution

The fourth proportional to 67,172.72, 92,698.35 and 36,957.40 is: 51,001.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,172.72 : 92,698.35 = 36,957.40 : x
  2. Step 2: Convert to fraction form
    67,172.72/92,698.35 = 36,957.40/x
  3. Step 3: Cross multiply
    67,172.72x = 92,698.35 × 36,957.40
  4. Step 4: Simplify right side
    67,172.72x = 3,425,890,000.29
  5. Step 5: Solve for x
    x = 3,425,890,000.29/67,172.72
  6. Step 6: Final answer
    x = 51,001.21

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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.