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Finding the Fourth Proportional to 19,483.88, 26,891.22 and 11,530.50

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Solution

The fourth proportional to 19,483.88, 26,891.22 and 11,530.50 is: 15,914.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,483.88 : 26,891.22 = 11,530.50 : x
  2. Step 2: Convert to fraction form
    19,483.88/26,891.22 = 11,530.50/x
  3. Step 3: Cross multiply
    19,483.88x = 26,891.22 × 11,530.50
  4. Step 4: Simplify right side
    19,483.88x = 310,069,212.21
  5. Step 5: Solve for x
    x = 310,069,212.21/19,483.88
  6. Step 6: Final answer
    x = 15,914.14

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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.