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Finding the Fourth Proportional to 127,759.60, 191,496.84 and 56,696.68

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Solution

The fourth proportional to 127,759.60, 191,496.84 and 56,696.68 is: 84,981.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,759.60 : 191,496.84 = 56,696.68 : x
  2. Step 2: Convert to fraction form
    127,759.60/191,496.84 = 56,696.68/x
  3. Step 3: Cross multiply
    127,759.60x = 191,496.84 × 56,696.68
  4. Step 4: Simplify right side
    127,759.60x = 10,857,235,058.49
  5. Step 5: Solve for x
    x = 10,857,235,058.49/127,759.60
  6. Step 6: Final answer
    x = 84,981.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.