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Finding the Fourth Proportional to 117,571.95, 162,267.63 and 66,587.31

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Solution

The fourth proportional to 117,571.95, 162,267.63 and 66,587.31 is: 91,900.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,571.95 : 162,267.63 = 66,587.31 : x
  2. Step 2: Convert to fraction form
    117,571.95/162,267.63 = 66,587.31/x
  3. Step 3: Cross multiply
    117,571.95x = 162,267.63 × 66,587.31
  4. Step 4: Simplify right side
    117,571.95x = 10,804,964,981.78
  5. Step 5: Solve for x
    x = 10,804,964,981.78/117,571.95
  6. Step 6: Final answer
    x = 91,900.87

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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.