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Finding the Fourth Proportional to 185,859.45, 256,486.68 and 105,301.89

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Solution

The fourth proportional to 185,859.45, 256,486.68 and 105,301.89 is: 145,316.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,859.45 : 256,486.68 = 105,301.89 : x
  2. Step 2: Convert to fraction form
    185,859.45/256,486.68 = 105,301.89/x
  3. Step 3: Cross multiply
    185,859.45x = 256,486.68 × 105,301.89
  4. Step 4: Simplify right side
    185,859.45x = 27,008,532,163.83
  5. Step 5: Solve for x
    x = 27,008,532,163.83/185,859.45
  6. Step 6: Final answer
    x = 145,316.97

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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.