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Finding the Fourth Proportional to 158,551.02, 218,803.41 and 86,926.77

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Solution

The fourth proportional to 158,551.02, 218,803.41 and 86,926.77 is: 119,960.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,551.02 : 218,803.41 = 86,926.77 : x
  2. Step 2: Convert to fraction form
    158,551.02/218,803.41 = 86,926.77/x
  3. Step 3: Cross multiply
    158,551.02x = 218,803.41 × 86,926.77
  4. Step 4: Simplify right side
    158,551.02x = 19,019,873,696.29
  5. Step 5: Solve for x
    x = 19,019,873,696.29/158,551.02
  6. Step 6: Final answer
    x = 119,960.59

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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.