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Finding the Fourth Proportional to 186,418.85, 257,264.46 and 105,843.70

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Solution

The fourth proportional to 186,418.85, 257,264.46 and 105,843.70 is: 146,067.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,418.85 : 257,264.46 = 105,843.70 : x
  2. Step 2: Convert to fraction form
    186,418.85/257,264.46 = 105,843.70/x
  3. Step 3: Cross multiply
    186,418.85x = 257,264.46 × 105,843.70
  4. Step 4: Simplify right side
    186,418.85x = 27,229,820,509.36
  5. Step 5: Solve for x
    x = 27,229,820,509.36/186,418.85
  6. Step 6: Final answer
    x = 146,067.96

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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.