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Finding the Fourth Proportional to 7,043.39, 9,721.32 and 4,811.44

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Solution

The fourth proportional to 7,043.39, 9,721.32 and 4,811.44 is: 6,640.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,043.39 : 9,721.32 = 4,811.44 : x
  2. Step 2: Convert to fraction form
    7,043.39/9,721.32 = 4,811.44/x
  3. Step 3: Cross multiply
    7,043.39x = 9,721.32 × 4,811.44
  4. Step 4: Simplify right side
    7,043.39x = 46,773,499.29
  5. Step 5: Solve for x
    x = 46,773,499.29/7,043.39
  6. Step 6: Final answer
    x = 6,640.77

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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.