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Finding the Fourth Proportional to 92,201.64, 127,240.80 and 56,391

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Solution

The fourth proportional to 92,201.64, 127,240.80 and 56,391 is: 77,821.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,201.64 : 127,240.80 = 56,391 : x
  2. Step 2: Convert to fraction form
    92,201.64/127,240.80 = 56,391/x
  3. Step 3: Cross multiply
    92,201.64x = 127,240.80 × 56,391
  4. Step 4: Simplify right side
    92,201.64x = 7,175,235,952.80
  5. Step 5: Solve for x
    x = 7,175,235,952.80/92,201.64
  6. Step 6: Final answer
    x = 77,821.13

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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.