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Finding the Fourth Proportional to 393,905.04, 543,582 and 224,135.52

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Solution

The fourth proportional to 393,905.04, 543,582 and 224,135.52 is: 309,303.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,905.04 : 543,582 = 224,135.52 : x
  2. Step 2: Convert to fraction form
    393,905.04/543,582 = 224,135.52/x
  3. Step 3: Cross multiply
    393,905.04x = 543,582 × 224,135.52
  4. Step 4: Simplify right side
    393,905.04x = 121,836,034,232.64
  5. Step 5: Solve for x
    x = 121,836,034,232.64/393,905.04
  6. Step 6: Final answer
    x = 309,303.06

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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.