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Finding the Fourth Proportional to 181,893.28, 251,013.18 and 105,427.12

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Solution

The fourth proportional to 181,893.28, 251,013.18 and 105,427.12 is: 145,489.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,893.28 : 251,013.18 = 105,427.12 : x
  2. Step 2: Convert to fraction form
    181,893.28/251,013.18 = 105,427.12/x
  3. Step 3: Cross multiply
    181,893.28x = 251,013.18 × 105,427.12
  4. Step 4: Simplify right side
    181,893.28x = 26,463,596,649.44
  5. Step 5: Solve for x
    x = 26,463,596,649.44/181,893.28
  6. Step 6: Final answer
    x = 145,489.69

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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.