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Finding the Fourth Proportional to 92,145.13, 138,130.13 and 36,021.22

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Solution

The fourth proportional to 92,145.13, 138,130.13 and 36,021.22 is: 53,997.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,145.13 : 138,130.13 = 36,021.22 : x
  2. Step 2: Convert to fraction form
    92,145.13/138,130.13 = 36,021.22/x
  3. Step 3: Cross multiply
    92,145.13x = 138,130.13 × 36,021.22
  4. Step 4: Simplify right side
    92,145.13x = 4,975,615,621.25
  5. Step 5: Solve for x
    x = 4,975,615,621.25/92,145.13
  6. Step 6: Final answer
    x = 53,997.60

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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.