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Finding the Fourth Proportional to 2,951.70, 4,403.70 and 2,656.47

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Solution

The fourth proportional to 2,951.70, 4,403.70 and 2,656.47 is: 3,963.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,951.70 : 4,403.70 = 2,656.47 : x
  2. Step 2: Convert to fraction form
    2,951.70/4,403.70 = 2,656.47/x
  3. Step 3: Cross multiply
    2,951.70x = 4,403.70 × 2,656.47
  4. Step 4: Simplify right side
    2,951.70x = 11,698,296.94
  5. Step 5: Solve for x
    x = 11,698,296.94/2,951.70
  6. Step 6: Final answer
    x = 3,963.24

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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.