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Finding the Fourth Proportional to 7,047.92, 9,726.28 and 3,904.32

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Solution

The fourth proportional to 7,047.92, 9,726.28 and 3,904.32 is: 5,388.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,047.92 : 9,726.28 = 3,904.32 : x
  2. Step 2: Convert to fraction form
    7,047.92/9,726.28 = 3,904.32/x
  3. Step 3: Cross multiply
    7,047.92x = 9,726.28 × 3,904.32
  4. Step 4: Simplify right side
    7,047.92x = 37,974,509.53
  5. Step 5: Solve for x
    x = 37,974,509.53/7,047.92
  6. Step 6: Final answer
    x = 5,388.04

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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.