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Finding the Fourth Proportional to 68,957.74, 95,165.73 and 51,931.94

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Solution

The fourth proportional to 68,957.74, 95,165.73 and 51,931.94 is: 71,669.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,957.74 : 95,165.73 = 51,931.94 : x
  2. Step 2: Convert to fraction form
    68,957.74/95,165.73 = 51,931.94/x
  3. Step 3: Cross multiply
    68,957.74x = 95,165.73 × 51,931.94
  4. Step 4: Simplify right side
    68,957.74x = 4,942,140,980.42
  5. Step 5: Solve for x
    x = 4,942,140,980.42/68,957.74
  6. Step 6: Final answer
    x = 71,669.13

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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.