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Finding the Fourth Proportional to 171,057.62, 236,052.63 and 99,432.01

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Solution

The fourth proportional to 171,057.62, 236,052.63 and 99,432.01 is: 137,212.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,057.62 : 236,052.63 = 99,432.01 : x
  2. Step 2: Convert to fraction form
    171,057.62/236,052.63 = 99,432.01/x
  3. Step 3: Cross multiply
    171,057.62x = 236,052.63 × 99,432.01
  4. Step 4: Simplify right side
    171,057.62x = 23,471,186,433.96
  5. Step 5: Solve for x
    x = 23,471,186,433.96/171,057.62
  6. Step 6: Final answer
    x = 137,212.16

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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.