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Finding the Fourth Proportional to 108,051.60, 161,939.70 and 60,666.60

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Solution

The fourth proportional to 108,051.60, 161,939.70 and 60,666.60 is: 90,922.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,051.60 : 161,939.70 = 60,666.60 : x
  2. Step 2: Convert to fraction form
    108,051.60/161,939.70 = 60,666.60/x
  3. Step 3: Cross multiply
    108,051.60x = 161,939.70 × 60,666.60
  4. Step 4: Simplify right side
    108,051.60x = 9,824,331,004.02
  5. Step 5: Solve for x
    x = 9,824,331,004.02/108,051.60
  6. Step 6: Final answer
    x = 90,922.59

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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.