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Finding the Fourth Proportional to 108,114.60, 161,783.10 and 73,122.60

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Solution

The fourth proportional to 108,114.60, 161,783.10 and 73,122.60 is: 109,420.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,114.60 : 161,783.10 = 73,122.60 : x
  2. Step 2: Convert to fraction form
    108,114.60/161,783.10 = 73,122.60/x
  3. Step 3: Cross multiply
    108,114.60x = 161,783.10 × 73,122.60
  4. Step 4: Simplify right side
    108,114.60x = 11,830,000,908.06
  5. Step 5: Solve for x
    x = 11,830,000,908.06/108,114.60
  6. Step 6: Final answer
    x = 109,420.94

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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.