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Finding the Fourth Proportional to 70,615.13, 105,922.59 and 18,024.62

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Solution

The fourth proportional to 70,615.13, 105,922.59 and 18,024.62 is: 27,036.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,615.13 : 105,922.59 = 18,024.62 : x
  2. Step 2: Convert to fraction form
    70,615.13/105,922.59 = 18,024.62/x
  3. Step 3: Cross multiply
    70,615.13x = 105,922.59 × 18,024.62
  4. Step 4: Simplify right side
    70,615.13x = 1,909,213,904.55
  5. Step 5: Solve for x
    x = 1,909,213,904.55/70,615.13
  6. Step 6: Final answer
    x = 27,036.90

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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.