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Finding the Fourth Proportional to 331,011.90, 495,533.70 and 331,011.90

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Solution

The fourth proportional to 331,011.90, 495,533.70 and 331,011.90 is: 495,533.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,011.90 : 495,533.70 = 331,011.90 : x
  2. Step 2: Convert to fraction form
    331,011.90/495,533.70 = 331,011.90/x
  3. Step 3: Cross multiply
    331,011.90x = 495,533.70 × 331,011.90
  4. Step 4: Simplify right side
    331,011.90x = 164,027,551,551.03
  5. Step 5: Solve for x
    x = 164,027,551,551.03/331,011.90
  6. Step 6: Final answer
    x = 495,533.70

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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.