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Finding the Fourth Proportional to 107,963.72, 148,876.88 and 92,907.44

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Solution

The fourth proportional to 107,963.72, 148,876.88 and 92,907.44 is: 128,114.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,963.72 : 148,876.88 = 92,907.44 : x
  2. Step 2: Convert to fraction form
    107,963.72/148,876.88 = 92,907.44/x
  3. Step 3: Cross multiply
    107,963.72x = 148,876.88 × 92,907.44
  4. Step 4: Simplify right side
    107,963.72x = 13,831,769,795.99
  5. Step 5: Solve for x
    x = 13,831,769,795.99/107,963.72
  6. Step 6: Final answer
    x = 128,114.98

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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.