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Finding the Fourth Proportional to 393,996.80, 590,822.40 and 157,260.80

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Solution

The fourth proportional to 393,996.80, 590,822.40 and 157,260.80 is: 235,822.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,996.80 : 590,822.40 = 157,260.80 : x
  2. Step 2: Convert to fraction form
    393,996.80/590,822.40 = 157,260.80/x
  3. Step 3: Cross multiply
    393,996.80x = 590,822.40 × 157,260.80
  4. Step 4: Simplify right side
    393,996.80x = 92,913,203,281.92
  5. Step 5: Solve for x
    x = 92,913,203,281.92/393,996.80
  6. Step 6: Final answer
    x = 235,822.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.