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Finding the Fourth Proportional to 123,858.32, 170,926.44 and 70,141.88

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Solution

The fourth proportional to 123,858.32, 170,926.44 and 70,141.88 is: 96,796.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,858.32 : 170,926.44 = 70,141.88 : x
  2. Step 2: Convert to fraction form
    123,858.32/170,926.44 = 70,141.88/x
  3. Step 3: Cross multiply
    123,858.32x = 170,926.44 × 70,141.88
  4. Step 4: Simplify right side
    123,858.32x = 11,989,101,843.31
  5. Step 5: Solve for x
    x = 11,989,101,843.31/123,858.32
  6. Step 6: Final answer
    x = 96,796.90

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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.