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Finding the Fourth Proportional to 167,356.53, 230,970.89 and 99,390.04

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Solution

The fourth proportional to 167,356.53, 230,970.89 and 99,390.04 is: 137,169.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,356.53 : 230,970.89 = 99,390.04 : x
  2. Step 2: Convert to fraction form
    167,356.53/230,970.89 = 99,390.04/x
  3. Step 3: Cross multiply
    167,356.53x = 230,970.89 × 99,390.04
  4. Step 4: Simplify right side
    167,356.53x = 22,956,205,666.98
  5. Step 5: Solve for x
    x = 22,956,205,666.98/167,356.53
  6. Step 6: Final answer
    x = 137,169.46

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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.