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Finding the Fourth Proportional to 19,351.68, 26,664.16 and 13,053.12

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Solution

The fourth proportional to 19,351.68, 26,664.16 and 13,053.12 is: 17,985.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,351.68 : 26,664.16 = 13,053.12 : x
  2. Step 2: Convert to fraction form
    19,351.68/26,664.16 = 13,053.12/x
  3. Step 3: Cross multiply
    19,351.68x = 26,664.16 × 13,053.12
  4. Step 4: Simplify right side
    19,351.68x = 348,050,480.18
  5. Step 5: Solve for x
    x = 348,050,480.18/19,351.68
  6. Step 6: Final answer
    x = 17,985.54

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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.