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Finding the Fourth Proportional to 101,716.44, 140,376.96 and 56,398.92

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Solution

The fourth proportional to 101,716.44, 140,376.96 and 56,398.92 is: 77,835.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,716.44 : 140,376.96 = 56,398.92 : x
  2. Step 2: Convert to fraction form
    101,716.44/140,376.96 = 56,398.92/x
  3. Step 3: Cross multiply
    101,716.44x = 140,376.96 × 56,398.92
  4. Step 4: Simplify right side
    101,716.44x = 7,917,108,936.88
  5. Step 5: Solve for x
    x = 7,917,108,936.88/101,716.44
  6. Step 6: Final answer
    x = 77,835.10

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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.