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Finding the Fourth Proportional to 18,988.47, 26,203.77 and 11,030.76

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Solution

The fourth proportional to 18,988.47, 26,203.77 and 11,030.76 is: 15,222.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,988.47 : 26,203.77 = 11,030.76 : x
  2. Step 2: Convert to fraction form
    18,988.47/26,203.77 = 11,030.76/x
  3. Step 3: Cross multiply
    18,988.47x = 26,203.77 × 11,030.76
  4. Step 4: Simplify right side
    18,988.47x = 289,047,497.97
  5. Step 5: Solve for x
    x = 289,047,497.97/18,988.47
  6. Step 6: Final answer
    x = 15,222.26

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.