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Finding the Fourth Proportional to 17,543.80, 26,315.70 and 15,356.80

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Solution

The fourth proportional to 17,543.80, 26,315.70 and 15,356.80 is: 23,035.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,543.80 : 26,315.70 = 15,356.80 : x
  2. Step 2: Convert to fraction form
    17,543.80/26,315.70 = 15,356.80/x
  3. Step 3: Cross multiply
    17,543.80x = 26,315.70 × 15,356.80
  4. Step 4: Simplify right side
    17,543.80x = 404,124,941.76
  5. Step 5: Solve for x
    x = 404,124,941.76/17,543.80
  6. Step 6: Final answer
    x = 23,035.20

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.