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Finding the Fourth Proportional to 330,687.51, 495,941.14 and 90,744.52

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Solution

The fourth proportional to 330,687.51, 495,941.14 and 90,744.52 is: 136,092.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,687.51 : 495,941.14 = 90,744.52 : x
  2. Step 2: Convert to fraction form
    330,687.51/495,941.14 = 90,744.52/x
  3. Step 3: Cross multiply
    330,687.51x = 495,941.14 × 90,744.52
  4. Step 4: Simplify right side
    330,687.51x = 45,003,940,697.55
  5. Step 5: Solve for x
    x = 45,003,940,697.55/330,687.51
  6. Step 6: Final answer
    x = 136,092.05

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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.