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Finding the Fourth Proportional to 70,143.68, 105,216.48 and 23,396.60

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Solution

The fourth proportional to 70,143.68, 105,216.48 and 23,396.60 is: 35,095.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,143.68 : 105,216.48 = 23,396.60 : x
  2. Step 2: Convert to fraction form
    70,143.68/105,216.48 = 23,396.60/x
  3. Step 3: Cross multiply
    70,143.68x = 105,216.48 × 23,396.60
  4. Step 4: Simplify right side
    70,143.68x = 2,461,707,895.97
  5. Step 5: Solve for x
    x = 2,461,707,895.97/70,143.68
  6. Step 6: Final answer
    x = 35,095.22

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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.