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Finding the Fourth Proportional to 367,875.96, 551,954.03 and 128,016.51

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Solution

The fourth proportional to 367,875.96, 551,954.03 and 128,016.51 is: 192,073.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,875.96 : 551,954.03 = 128,016.51 : x
  2. Step 2: Convert to fraction form
    367,875.96/551,954.03 = 128,016.51/x
  3. Step 3: Cross multiply
    367,875.96x = 551,954.03 × 128,016.51
  4. Step 4: Simplify right side
    367,875.96x = 70,659,228,601.04
  5. Step 5: Solve for x
    x = 70,659,228,601.04/367,875.96
  6. Step 6: Final answer
    x = 192,073.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.