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Finding the Fourth Proportional to 165,787.70, 248,681.55 and 41,128.70

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Solution

The fourth proportional to 165,787.70, 248,681.55 and 41,128.70 is: 61,693.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,787.70 : 248,681.55 = 41,128.70 : x
  2. Step 2: Convert to fraction form
    165,787.70/248,681.55 = 41,128.70/x
  3. Step 3: Cross multiply
    165,787.70x = 248,681.55 × 41,128.70
  4. Step 4: Simplify right side
    165,787.70x = 10,227,948,865.49
  5. Step 5: Solve for x
    x = 10,227,948,865.49/165,787.70
  6. Step 6: Final answer
    x = 61,693.05

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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.