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Finding the Fourth Proportional to 331,351.02, 496,989.50 and 91,482.93

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Solution

The fourth proportional to 331,351.02, 496,989.50 and 91,482.93 is: 137,214.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,351.02 : 496,989.50 = 91,482.93 : x
  2. Step 2: Convert to fraction form
    331,351.02/496,989.50 = 91,482.93/x
  3. Step 3: Cross multiply
    331,351.02x = 496,989.50 × 91,482.93
  4. Step 4: Simplify right side
    331,351.02x = 45,466,055,181.82
  5. Step 5: Solve for x
    x = 45,466,055,181.82/331,351.02
  6. Step 6: Final answer
    x = 137,214.17

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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.