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Finding the Fourth Proportional to 1,041,978, 1,562,949.90 and 331,996.38

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Solution

The fourth proportional to 1,041,978, 1,562,949.90 and 331,996.38 is: 497,989.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,041,978 : 1,562,949.90 = 331,996.38 : x
  2. Step 2: Convert to fraction form
    1,041,978/1,562,949.90 = 331,996.38/x
  3. Step 3: Cross multiply
    1,041,978x = 1,562,949.90 × 331,996.38
  4. Step 4: Simplify right side
    1,041,978x = 518,893,708,921.36
  5. Step 5: Solve for x
    x = 518,893,708,921.36/1,041,978
  6. Step 6: Final answer
    x = 497,989.12

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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.