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Finding the Fourth Proportional to 157,679.87, 236,550.94 and 57,840.98

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Solution

The fourth proportional to 157,679.87, 236,550.94 and 57,840.98 is: 86,772.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,679.87 : 236,550.94 = 57,840.98 : x
  2. Step 2: Convert to fraction form
    157,679.87/236,550.94 = 57,840.98/x
  3. Step 3: Cross multiply
    157,679.87x = 236,550.94 × 57,840.98
  4. Step 4: Simplify right side
    157,679.87x = 13,682,336,862.16
  5. Step 5: Solve for x
    x = 13,682,336,862.16/157,679.87
  6. Step 6: Final answer
    x = 86,772.89

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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.