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Finding the Fourth Proportional to 285,015.92, 393,327.70 and 157,693.64

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Solution

The fourth proportional to 285,015.92, 393,327.70 and 157,693.64 is: 217,620.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,015.92 : 393,327.70 = 157,693.64 : x
  2. Step 2: Convert to fraction form
    285,015.92/393,327.70 = 157,693.64/x
  3. Step 3: Cross multiply
    285,015.92x = 393,327.70 × 157,693.64
  4. Step 4: Simplify right side
    285,015.92x = 62,025,274,364.96
  5. Step 5: Solve for x
    x = 62,025,274,364.96/285,015.92
  6. Step 6: Final answer
    x = 217,620.39

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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.