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Finding the Fourth Proportional to 827,584.88, 1,234,135.13 and 820,017.72

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Solution

The fourth proportional to 827,584.88, 1,234,135.13 and 820,017.72 is: 1,222,850.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,584.88 : 1,234,135.13 = 820,017.72 : x
  2. Step 2: Convert to fraction form
    827,584.88/1,234,135.13 = 820,017.72/x
  3. Step 3: Cross multiply
    827,584.88x = 1,234,135.13 × 820,017.72
  4. Step 4: Simplify right side
    827,584.88x = 1,012,012,671,374.41
  5. Step 5: Solve for x
    x = 1,012,012,671,374.41/827,584.88
  6. Step 6: Final answer
    x = 1,222,850.61

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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.