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Finding the Fourth Proportional to 285,186.56, 393,552.68 and 157,859.42

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Solution

The fourth proportional to 285,186.56, 393,552.68 and 157,859.42 is: 217,843.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,186.56 : 393,552.68 = 157,859.42 : x
  2. Step 2: Convert to fraction form
    285,186.56/393,552.68 = 157,859.42/x
  3. Step 3: Cross multiply
    285,186.56x = 393,552.68 × 157,859.42
  4. Step 4: Simplify right side
    285,186.56x = 62,125,997,804.25
  5. Step 5: Solve for x
    x = 62,125,997,804.25/285,186.56
  6. Step 6: Final answer
    x = 217,843.36

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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.