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Finding the Fourth Proportional to 69,356.40, 95,681.31 and 40,661.48

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Solution

The fourth proportional to 69,356.40, 95,681.31 and 40,661.48 is: 56,094.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,356.40 : 95,681.31 = 40,661.48 : x
  2. Step 2: Convert to fraction form
    69,356.40/95,681.31 = 40,661.48/x
  3. Step 3: Cross multiply
    69,356.40x = 95,681.31 × 40,661.48
  4. Step 4: Simplify right side
    69,356.40x = 3,890,543,194.53
  5. Step 5: Solve for x
    x = 3,890,543,194.53/69,356.40
  6. Step 6: Final answer
    x = 56,094.94

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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.