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Finding the Fourth Proportional to 158,592.74, 218,864.30 and 86,975.37

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Solution

The fourth proportional to 158,592.74, 218,864.30 and 86,975.37 is: 120,029.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,592.74 : 218,864.30 = 86,975.37 : x
  2. Step 2: Convert to fraction form
    158,592.74/218,864.30 = 86,975.37/x
  3. Step 3: Cross multiply
    158,592.74x = 218,864.30 × 86,975.37
  4. Step 4: Simplify right side
    158,592.74x = 19,035,803,037.41
  5. Step 5: Solve for x
    x = 19,035,803,037.41/158,592.74
  6. Step 6: Final answer
    x = 120,029.48

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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.