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Finding the Fourth Proportional to 19,287.68, 26,619.44 and 10,904

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Solution

The fourth proportional to 19,287.68, 26,619.44 and 10,904 is: 15,048.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,287.68 : 26,619.44 = 10,904 : x
  2. Step 2: Convert to fraction form
    19,287.68/26,619.44 = 10,904/x
  3. Step 3: Cross multiply
    19,287.68x = 26,619.44 × 10,904
  4. Step 4: Simplify right side
    19,287.68x = 290,258,373.76
  5. Step 5: Solve for x
    x = 290,258,373.76/19,287.68
  6. Step 6: Final answer
    x = 15,048.90

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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.