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Finding the Fourth Proportional to 168,030.99, 231,880.62 and 91,553.25

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Solution

The fourth proportional to 168,030.99, 231,880.62 and 91,553.25 is: 126,342.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,030.99 : 231,880.62 = 91,553.25 : x
  2. Step 2: Convert to fraction form
    168,030.99/231,880.62 = 91,553.25/x
  3. Step 3: Cross multiply
    168,030.99x = 231,880.62 × 91,553.25
  4. Step 4: Simplify right side
    168,030.99x = 21,229,424,373.02
  5. Step 5: Solve for x
    x = 21,229,424,373.02/168,030.99
  6. Step 6: Final answer
    x = 126,342.32

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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.