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Finding the Fourth Proportional to 285,278.76, 393,696.99 and 157,954.37

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Solution

The fourth proportional to 285,278.76, 393,696.99 and 157,954.37 is: 217,983.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,278.76 : 393,696.99 = 157,954.37 : x
  2. Step 2: Convert to fraction form
    285,278.76/393,696.99 = 157,954.37/x
  3. Step 3: Cross multiply
    285,278.76x = 393,696.99 × 157,954.37
  4. Step 4: Simplify right side
    285,278.76x = 62,186,158,057.86
  5. Step 5: Solve for x
    x = 62,186,158,057.86/285,278.76
  6. Step 6: Final answer
    x = 217,983.83

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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.