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Finding the Fourth Proportional to 123,963.76, 171,062.76 and 67,374.64

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Solution

The fourth proportional to 123,963.76, 171,062.76 and 67,374.64 is: 92,973.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,963.76 : 171,062.76 = 67,374.64 : x
  2. Step 2: Convert to fraction form
    123,963.76/171,062.76 = 67,374.64/x
  3. Step 3: Cross multiply
    123,963.76x = 171,062.76 × 67,374.64
  4. Step 4: Simplify right side
    123,963.76x = 11,525,291,872.41
  5. Step 5: Solve for x
    x = 11,525,291,872.41/123,963.76
  6. Step 6: Final answer
    x = 92,973.07

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1.5x scale

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.