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Finding the Fourth Proportional to 285,278.26, 393,696.30 and 157,953.87

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Solution

The fourth proportional to 285,278.26, 393,696.30 and 157,953.87 is: 217,983.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,278.26 : 393,696.30 = 157,953.87 : x
  2. Step 2: Convert to fraction form
    285,278.26/393,696.30 = 157,953.87/x
  3. Step 3: Cross multiply
    285,278.26x = 393,696.30 × 157,953.87
  4. Step 4: Simplify right side
    285,278.26x = 62,185,854,189.68
  5. Step 5: Solve for x
    x = 62,185,854,189.68/285,278.26
  6. Step 6: Final answer
    x = 217,983.15

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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.