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Finding the Fourth Proportional to 554,359.46, 765,012.33 and 312,644.12

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Solution

The fourth proportional to 554,359.46, 765,012.33 and 312,644.12 is: 431,446.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,359.46 : 765,012.33 = 312,644.12 : x
  2. Step 2: Convert to fraction form
    554,359.46/765,012.33 = 312,644.12/x
  3. Step 3: Cross multiply
    554,359.46x = 765,012.33 × 312,644.12
  4. Step 4: Simplify right side
    554,359.46x = 239,176,602,876.94
  5. Step 5: Solve for x
    x = 239,176,602,876.94/554,359.46
  6. Step 6: Final answer
    x = 431,446.78

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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.