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Finding the Fourth Proportional to 6,907.84, 9,536.61 and 5,143.66

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Solution

The fourth proportional to 6,907.84, 9,536.61 and 5,143.66 is: 7,101.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,907.84 : 9,536.61 = 5,143.66 : x
  2. Step 2: Convert to fraction form
    6,907.84/9,536.61 = 5,143.66/x
  3. Step 3: Cross multiply
    6,907.84x = 9,536.61 × 5,143.66
  4. Step 4: Simplify right side
    6,907.84x = 49,053,079.39
  5. Step 5: Solve for x
    x = 49,053,079.39/6,907.84
  6. Step 6: Final answer
    x = 7,101.07

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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.