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Finding the Fourth Proportional to 393,526.86, 543,064.53 and 223,760.97

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Solution

The fourth proportional to 393,526.86, 543,064.53 and 223,760.97 is: 308,788.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,526.86 : 543,064.53 = 223,760.97 : x
  2. Step 2: Convert to fraction form
    393,526.86/543,064.53 = 223,760.97/x
  3. Step 3: Cross multiply
    393,526.86x = 543,064.53 × 223,760.97
  4. Step 4: Simplify right side
    393,526.86x = 121,516,646,005.39
  5. Step 5: Solve for x
    x = 121,516,646,005.39/393,526.86
  6. Step 6: Final answer
    x = 308,788.70

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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.