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Finding the Fourth Proportional to 185,891.73, 256,553.84 and 105,345.20

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Solution

The fourth proportional to 185,891.73, 256,553.84 and 105,345.20 is: 145,389.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,891.73 : 256,553.84 = 105,345.20 : x
  2. Step 2: Convert to fraction form
    185,891.73/256,553.84 = 105,345.20/x
  3. Step 3: Cross multiply
    185,891.73x = 256,553.84 × 105,345.20
  4. Step 4: Simplify right side
    185,891.73x = 27,026,713,776.07
  5. Step 5: Solve for x
    x = 27,026,713,776.07/185,891.73
  6. Step 6: Final answer
    x = 145,389.54

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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.