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Finding the Fourth Proportional to 554,177.62, 831,008.11 and 287,866.63

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Solution

The fourth proportional to 554,177.62, 831,008.11 and 287,866.63 is: 431,665.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,177.62 : 831,008.11 = 287,866.63 : x
  2. Step 2: Convert to fraction form
    554,177.62/831,008.11 = 287,866.63/x
  3. Step 3: Cross multiply
    554,177.62x = 831,008.11 × 287,866.63
  4. Step 4: Simplify right side
    554,177.62x = 239,219,504,128.37
  5. Step 5: Solve for x
    x = 239,219,504,128.37/554,177.62
  6. Step 6: Final answer
    x = 431,665.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.