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Finding the Fourth Proportional to 7,047.94, 9,726.26 and 3,904.12

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Solution

The fourth proportional to 7,047.94, 9,726.26 and 3,904.12 is: 5,387.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,047.94 : 9,726.26 = 3,904.12 : x
  2. Step 2: Convert to fraction form
    7,047.94/9,726.26 = 3,904.12/x
  3. Step 3: Cross multiply
    7,047.94x = 9,726.26 × 3,904.12
  4. Step 4: Simplify right side
    7,047.94x = 37,972,486.19
  5. Step 5: Solve for x
    x = 37,972,486.19/7,047.94
  6. Step 6: Final answer
    x = 5,387.74

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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.