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Finding the Fourth Proportional to 19,357.67, 29,036.51 and 15,887.63

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Solution

The fourth proportional to 19,357.67, 29,036.51 and 15,887.63 is: 23,831.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,357.67 : 29,036.51 = 15,887.63 : x
  2. Step 2: Convert to fraction form
    19,357.67/29,036.51 = 15,887.63/x
  3. Step 3: Cross multiply
    19,357.67x = 29,036.51 × 15,887.63
  4. Step 4: Simplify right side
    19,357.67x = 461,321,102.75
  5. Step 5: Solve for x
    x = 461,321,102.75/19,357.67
  6. Step 6: Final answer
    x = 23,831.44

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Why These Related Problems?

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