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Finding the Fourth Proportional to 70,532.59, 105,796.15 and 17,943.45

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Solution

The fourth proportional to 70,532.59, 105,796.15 and 17,943.45 is: 26,914.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,532.59 : 105,796.15 = 17,943.45 : x
  2. Step 2: Convert to fraction form
    70,532.59/105,796.15 = 17,943.45/x
  3. Step 3: Cross multiply
    70,532.59x = 105,796.15 × 17,943.45
  4. Step 4: Simplify right side
    70,532.59x = 1,898,347,927.72
  5. Step 5: Solve for x
    x = 1,898,347,927.72/70,532.59
  6. Step 6: Final answer
    x = 26,914.48

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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.