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Finding the Fourth Proportional to 14,047.77, 19,387.04 and 7,761.09

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Solution

The fourth proportional to 14,047.77, 19,387.04 and 7,761.09 is: 10,710.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,047.77 : 19,387.04 = 7,761.09 : x
  2. Step 2: Convert to fraction form
    14,047.77/19,387.04 = 7,761.09/x
  3. Step 3: Cross multiply
    14,047.77x = 19,387.04 × 7,761.09
  4. Step 4: Simplify right side
    14,047.77x = 150,464,523.47
  5. Step 5: Solve for x
    x = 150,464,523.47/14,047.77
  6. Step 6: Final answer
    x = 10,710.92

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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.