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Finding the Fourth Proportional to 303,672.20, 455,702.70 and 177,312.20

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Solution

The fourth proportional to 303,672.20, 455,702.70 and 177,312.20 is: 266,081.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,672.20 : 455,702.70 = 177,312.20 : x
  2. Step 2: Convert to fraction form
    303,672.20/455,702.70 = 177,312.20/x
  3. Step 3: Cross multiply
    303,672.20x = 455,702.70 × 177,312.20
  4. Step 4: Simplify right side
    303,672.20x = 80,801,648,282.94
  5. Step 5: Solve for x
    x = 80,801,648,282.94/303,672.20
  6. Step 6: Final answer
    x = 266,081.81

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1.5x scale

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.