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Finding the Fourth Proportional to 393,526.68, 543,064.30 and 223,760.82

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Solution

The fourth proportional to 393,526.68, 543,064.30 and 223,760.82 is: 308,788.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,526.68 : 543,064.30 = 223,760.82 : x
  2. Step 2: Convert to fraction form
    393,526.68/543,064.30 = 223,760.82/x
  3. Step 3: Cross multiply
    393,526.68x = 543,064.30 × 223,760.82
  4. Step 4: Simplify right side
    393,526.68x = 121,516,510,365.41
  5. Step 5: Solve for x
    x = 121,516,510,365.41/393,526.68
  6. Step 6: Final answer
    x = 308,788.50

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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.