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Finding the Fourth Proportional to 800,840.97, 1,105,676.32 and 714,651.74

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Solution

The fourth proportional to 800,840.97, 1,105,676.32 and 714,651.74 is: 986,679.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,840.97 : 1,105,676.32 = 714,651.74 : x
  2. Step 2: Convert to fraction form
    800,840.97/1,105,676.32 = 714,651.74/x
  3. Step 3: Cross multiply
    800,840.97x = 1,105,676.32 × 714,651.74
  4. Step 4: Simplify right side
    800,840.97x = 790,173,499,016.37
  5. Step 5: Solve for x
    x = 790,173,499,016.37/800,840.97
  6. Step 6: Final answer
    x = 986,679.67

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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.