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Finding the Fourth Proportional to 7,907.47, 11,861.19 and 7,426.33

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Solution

The fourth proportional to 7,907.47, 11,861.19 and 7,426.33 is: 11,139.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,907.47 : 11,861.19 = 7,426.33 : x
  2. Step 2: Convert to fraction form
    7,907.47/11,861.19 = 7,426.33/x
  3. Step 3: Cross multiply
    7,907.47x = 11,861.19 × 7,426.33
  4. Step 4: Simplify right side
    7,907.47x = 88,085,111.13
  5. Step 5: Solve for x
    x = 88,085,111.13/7,907.47
  6. Step 6: Final answer
    x = 11,139.48

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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.