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Finding the Fourth Proportional to 167,685.75, 231,328.59 and 99,664.59

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Solution

The fourth proportional to 167,685.75, 231,328.59 and 99,664.59 is: 137,490.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,685.75 : 231,328.59 = 99,664.59 : x
  2. Step 2: Convert to fraction form
    167,685.75/231,328.59 = 99,664.59/x
  3. Step 3: Cross multiply
    167,685.75x = 231,328.59 × 99,664.59
  4. Step 4: Simplify right side
    167,685.75x = 23,055,269,077.63
  5. Step 5: Solve for x
    x = 23,055,269,077.63/167,685.75
  6. Step 6: Final answer
    x = 137,490.93

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1.5x scale

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.