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Finding the Fourth Proportional to 68,776.42, 94,957.68 and 42,974.32

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Solution

The fourth proportional to 68,776.42, 94,957.68 and 42,974.32 is: 59,333.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,776.42 : 94,957.68 = 42,974.32 : x
  2. Step 2: Convert to fraction form
    68,776.42/94,957.68 = 42,974.32/x
  3. Step 3: Cross multiply
    68,776.42x = 94,957.68 × 42,974.32
  4. Step 4: Simplify right side
    68,776.42x = 4,080,741,726.78
  5. Step 5: Solve for x
    x = 4,080,741,726.78/68,776.42
  6. Step 6: Final answer
    x = 59,333.44

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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.