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Finding the Fourth Proportional to 92,338.79, 127,397.61 and 56,491.43

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Solution

The fourth proportional to 92,338.79, 127,397.61 and 56,491.43 is: 77,939.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,338.79 : 127,397.61 = 56,491.43 : x
  2. Step 2: Convert to fraction form
    92,338.79/127,397.61 = 56,491.43/x
  3. Step 3: Cross multiply
    92,338.79x = 127,397.61 × 56,491.43
  4. Step 4: Simplify right side
    92,338.79x = 7,196,872,530.49
  5. Step 5: Solve for x
    x = 7,196,872,530.49/92,338.79
  6. Step 6: Final answer
    x = 77,939.87

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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.