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Finding the Fourth Proportional to 128,040.84, 192,056.40 and 34,549.02

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Solution

The fourth proportional to 128,040.84, 192,056.40 and 34,549.02 is: 51,822.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,040.84 : 192,056.40 = 34,549.02 : x
  2. Step 2: Convert to fraction form
    128,040.84/192,056.40 = 34,549.02/x
  3. Step 3: Cross multiply
    128,040.84x = 192,056.40 × 34,549.02
  4. Step 4: Simplify right side
    128,040.84x = 6,635,360,404.73
  5. Step 5: Solve for x
    x = 6,635,360,404.73/128,040.84
  6. Step 6: Final answer
    x = 51,822.22

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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.