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Finding the Fourth Proportional to 160,084.71, 239,936.21 and 74,580.87

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Solution

The fourth proportional to 160,084.71, 239,936.21 and 74,580.87 is: 111,782.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,084.71 : 239,936.21 = 74,580.87 : x
  2. Step 2: Convert to fraction form
    160,084.71/239,936.21 = 74,580.87/x
  3. Step 3: Cross multiply
    160,084.71x = 239,936.21 × 74,580.87
  4. Step 4: Simplify right side
    160,084.71x = 17,894,650,913.40
  5. Step 5: Solve for x
    x = 17,894,650,913.40/160,084.71
  6. Step 6: Final answer
    x = 111,782.39

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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.