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Finding the Fourth Proportional to 70,136.37, 105,230.48 and 25,792.11

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Solution

The fourth proportional to 70,136.37, 105,230.48 and 25,792.11 is: 38,697.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,136.37 : 105,230.48 = 25,792.11 : x
  2. Step 2: Convert to fraction form
    70,136.37/105,230.48 = 25,792.11/x
  3. Step 3: Cross multiply
    70,136.37x = 105,230.48 × 25,792.11
  4. Step 4: Simplify right side
    70,136.37x = 2,714,115,986.55
  5. Step 5: Solve for x
    x = 2,714,115,986.55/70,136.37
  6. Step 6: Final answer
    x = 38,697.70

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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.