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Finding the Fourth Proportional to 694,139.01, 957,982.50 and 422,225.66

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Solution

The fourth proportional to 694,139.01, 957,982.50 and 422,225.66 is: 582,714.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,139.01 : 957,982.50 = 422,225.66 : x
  2. Step 2: Convert to fraction form
    694,139.01/957,982.50 = 422,225.66/x
  3. Step 3: Cross multiply
    694,139.01x = 957,982.50 × 422,225.66
  4. Step 4: Simplify right side
    694,139.01x = 404,484,788,541.04
  5. Step 5: Solve for x
    x = 404,484,788,541.04/694,139.01
  6. Step 6: Final answer
    x = 582,714.39

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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.