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Finding the Fourth Proportional to 108,346.40, 162,649.20 and 60,999.20

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Solution

The fourth proportional to 108,346.40, 162,649.20 and 60,999.20 is: 91,571.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,346.40 : 162,649.20 = 60,999.20 : x
  2. Step 2: Convert to fraction form
    108,346.40/162,649.20 = 60,999.20/x
  3. Step 3: Cross multiply
    108,346.40x = 162,649.20 × 60,999.20
  4. Step 4: Simplify right side
    108,346.40x = 9,921,471,080.64
  5. Step 5: Solve for x
    x = 9,921,471,080.64/108,346.40
  6. Step 6: Final answer
    x = 91,571.77

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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.