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Finding the Fourth Proportional to 393,868.80, 590,803.20 and 393,868.80

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Solution

The fourth proportional to 393,868.80, 590,803.20 and 393,868.80 is: 590,803.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,868.80 : 590,803.20 = 393,868.80 : x
  2. Step 2: Convert to fraction form
    393,868.80/590,803.20 = 393,868.80/x
  3. Step 3: Cross multiply
    393,868.80x = 590,803.20 × 393,868.80
  4. Step 4: Simplify right side
    393,868.80x = 232,698,947,420.16
  5. Step 5: Solve for x
    x = 232,698,947,420.16/393,868.80
  6. Step 6: Final answer
    x = 590,803.20

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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.