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Finding the Fourth Proportional to 92,555.60, 127,661.76 and 56,759.87

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Solution

The fourth proportional to 92,555.60, 127,661.76 and 56,759.87 is: 78,288.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,555.60 : 127,661.76 = 56,759.87 : x
  2. Step 2: Convert to fraction form
    92,555.60/127,661.76 = 56,759.87/x
  3. Step 3: Cross multiply
    92,555.60x = 127,661.76 × 56,759.87
  4. Step 4: Simplify right side
    92,555.60x = 7,246,064,901.57
  5. Step 5: Solve for x
    x = 7,246,064,901.57/92,555.60
  6. Step 6: Final answer
    x = 78,288.78

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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.