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Finding the Fourth Proportional to 512,823.36, 766,037.10 and 379,963.11

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Solution

The fourth proportional to 512,823.36, 766,037.10 and 379,963.11 is: 567,575.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,823.36 : 766,037.10 = 379,963.11 : x
  2. Step 2: Convert to fraction form
    512,823.36/766,037.10 = 379,963.11/x
  3. Step 3: Cross multiply
    512,823.36x = 766,037.10 × 379,963.11
  4. Step 4: Simplify right side
    512,823.36x = 291,065,838,891.38
  5. Step 5: Solve for x
    x = 291,065,838,891.38/512,823.36
  6. Step 6: Final answer
    x = 567,575.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.