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Finding the Fourth Proportional to 644,640.89, 888,680.57 and 453,059.69

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Solution

The fourth proportional to 644,640.89, 888,680.57 and 453,059.69 is: 624,573.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,640.89 : 888,680.57 = 453,059.69 : x
  2. Step 2: Convert to fraction form
    644,640.89/888,680.57 = 453,059.69/x
  3. Step 3: Cross multiply
    644,640.89x = 888,680.57 × 453,059.69
  4. Step 4: Simplify right side
    644,640.89x = 402,625,336,844.52
  5. Step 5: Solve for x
    x = 402,625,336,844.52/644,640.89
  6. Step 6: Final answer
    x = 624,573.07

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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.