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Finding the Fourth Proportional to 73,114.20, 109,671.30 and 42,010.20

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Solution

The fourth proportional to 73,114.20, 109,671.30 and 42,010.20 is: 63,015.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,114.20 : 109,671.30 = 42,010.20 : x
  2. Step 2: Convert to fraction form
    73,114.20/109,671.30 = 42,010.20/x
  3. Step 3: Cross multiply
    73,114.20x = 109,671.30 × 42,010.20
  4. Step 4: Simplify right side
    73,114.20x = 4,607,313,247.26
  5. Step 5: Solve for x
    x = 4,607,313,247.26/73,114.20
  6. Step 6: Final answer
    x = 63,015.30

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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.