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Finding the Fourth Proportional to 667,176.72, 920,702.50 and 361,253.01

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Solution

The fourth proportional to 667,176.72, 920,702.50 and 361,253.01 is: 498,528.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,176.72 : 920,702.50 = 361,253.01 : x
  2. Step 2: Convert to fraction form
    667,176.72/920,702.50 = 361,253.01/x
  3. Step 3: Cross multiply
    667,176.72x = 920,702.50 × 361,253.01
  4. Step 4: Simplify right side
    667,176.72x = 332,606,549,439.53
  5. Step 5: Solve for x
    x = 332,606,549,439.53/667,176.72
  6. Step 6: Final answer
    x = 498,528.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.