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Finding the Fourth Proportional to 171,229.50, 236,355 and 99,669.64

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Solution

The fourth proportional to 171,229.50, 236,355 and 99,669.64 is: 137,578.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,229.50 : 236,355 = 99,669.64 : x
  2. Step 2: Convert to fraction form
    171,229.50/236,355 = 99,669.64/x
  3. Step 3: Cross multiply
    171,229.50x = 236,355 × 99,669.64
  4. Step 4: Simplify right side
    171,229.50x = 23,557,417,762.20
  5. Step 5: Solve for x
    x = 23,557,417,762.20/171,229.50
  6. Step 6: Final answer
    x = 137,578.03

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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.