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Finding the Fourth Proportional to 159,776.48, 220,571.43 and 99,366.58

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Solution

The fourth proportional to 159,776.48, 220,571.43 and 99,366.58 is: 137,175.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,776.48 : 220,571.43 = 99,366.58 : x
  2. Step 2: Convert to fraction form
    159,776.48/220,571.43 = 99,366.58/x
  3. Step 3: Cross multiply
    159,776.48x = 220,571.43 × 99,366.58
  4. Step 4: Simplify right side
    159,776.48x = 21,917,428,466.01
  5. Step 5: Solve for x
    x = 21,917,428,466.01/159,776.48
  6. Step 6: Final answer
    x = 137,175.57

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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.