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Finding the Fourth Proportional to 647,111.70, 970,667.55 and 173,844.90

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Solution

The fourth proportional to 647,111.70, 970,667.55 and 173,844.90 is: 260,767.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,111.70 : 970,667.55 = 173,844.90 : x
  2. Step 2: Convert to fraction form
    647,111.70/970,667.55 = 173,844.90/x
  3. Step 3: Cross multiply
    647,111.70x = 970,667.55 × 173,844.90
  4. Step 4: Simplify right side
    647,111.70x = 168,745,603,163.00
  5. Step 5: Solve for x
    x = 168,745,603,163.00/647,111.70
  6. Step 6: Final answer
    x = 260,767.35

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.