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Finding the Fourth Proportional to 393,266.19, 542,753.42 and 223,525.83

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Solution

The fourth proportional to 393,266.19, 542,753.42 and 223,525.83 is: 308,491.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,266.19 : 542,753.42 = 223,525.83 : x
  2. Step 2: Convert to fraction form
    393,266.19/542,753.42 = 223,525.83/x
  3. Step 3: Cross multiply
    393,266.19x = 542,753.42 × 223,525.83
  4. Step 4: Simplify right side
    393,266.19x = 121,319,407,573.21
  5. Step 5: Solve for x
    x = 121,319,407,573.21/393,266.19
  6. Step 6: Final answer
    x = 308,491.83

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.