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Finding the Fourth Proportional to 186,439.66, 257,277.87 and 105,856.61

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Solution

The fourth proportional to 186,439.66, 257,277.87 and 105,856.61 is: 146,077.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,439.66 : 257,277.87 = 105,856.61 : x
  2. Step 2: Convert to fraction form
    186,439.66/257,277.87 = 105,856.61/x
  3. Step 3: Cross multiply
    186,439.66x = 257,277.87 × 105,856.61
  4. Step 4: Simplify right side
    186,439.66x = 27,234,561,859.83
  5. Step 5: Solve for x
    x = 27,234,561,859.83/186,439.66
  6. Step 6: Final answer
    x = 146,077.09

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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.