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Finding the Fourth Proportional to 393,603.28, 543,165.72 and 223,833.52

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Solution

The fourth proportional to 393,603.28, 543,165.72 and 223,833.52 is: 308,886.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,603.28 : 543,165.72 = 223,833.52 : x
  2. Step 2: Convert to fraction form
    393,603.28/543,165.72 = 223,833.52/x
  3. Step 3: Cross multiply
    393,603.28x = 543,165.72 × 223,833.52
  4. Step 4: Simplify right side
    393,603.28x = 121,578,695,050.93
  5. Step 5: Solve for x
    x = 121,578,695,050.93/393,603.28
  6. Step 6: Final answer
    x = 308,886.39

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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.