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Finding the Fourth Proportional to 667,057.70, 919,917.69 and 617,518.10

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Solution

The fourth proportional to 667,057.70, 919,917.69 and 617,518.10 is: 851,599.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,057.70 : 919,917.69 = 617,518.10 : x
  2. Step 2: Convert to fraction form
    667,057.70/919,917.69 = 617,518.10/x
  3. Step 3: Cross multiply
    667,057.70x = 919,917.69 × 617,518.10
  4. Step 4: Simplify right side
    667,057.70x = 568,065,824,085.19
  5. Step 5: Solve for x
    x = 568,065,824,085.19/667,057.70
  6. Step 6: Final answer
    x = 851,599.23

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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.