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Finding the Fourth Proportional to 492,127.38, 679,135.72 and 265,772.88

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Solution

The fourth proportional to 492,127.38, 679,135.72 and 265,772.88 is: 366,766.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,127.38 : 679,135.72 = 265,772.88 : x
  2. Step 2: Convert to fraction form
    492,127.38/679,135.72 = 265,772.88/x
  3. Step 3: Cross multiply
    492,127.38x = 679,135.72 × 265,772.88
  4. Step 4: Simplify right side
    492,127.38x = 180,495,856,215.27
  5. Step 5: Solve for x
    x = 180,495,856,215.27/492,127.38
  6. Step 6: Final answer
    x = 366,766.54

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1.5x scale

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.