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Finding the Fourth Proportional to 70,422.69, 105,637.88 and 17,832.63

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Solution

The fourth proportional to 70,422.69, 105,637.88 and 17,832.63 is: 26,749.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,422.69 : 105,637.88 = 17,832.63 : x
  2. Step 2: Convert to fraction form
    70,422.69/105,637.88 = 17,832.63/x
  3. Step 3: Cross multiply
    70,422.69x = 105,637.88 × 17,832.63
  4. Step 4: Simplify right side
    70,422.69x = 1,883,800,963.93
  5. Step 5: Solve for x
    x = 1,883,800,963.93/70,422.69
  6. Step 6: Final answer
    x = 26,749.92

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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.