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Finding the Fourth Proportional to 171,374.30, 236,439.30 and 99,739.13

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Solution

The fourth proportional to 171,374.30, 236,439.30 and 99,739.13 is: 137,606.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,374.30 : 236,439.30 = 99,739.13 : x
  2. Step 2: Convert to fraction form
    171,374.30/236,439.30 = 99,739.13/x
  3. Step 3: Cross multiply
    171,374.30x = 236,439.30 × 99,739.13
  4. Step 4: Simplify right side
    171,374.30x = 23,582,250,079.81
  5. Step 5: Solve for x
    x = 23,582,250,079.81/171,374.30
  6. Step 6: Final answer
    x = 137,606.69

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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.