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Finding the Fourth Proportional to 108,032.60, 161,911.20 and 60,647.60

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Solution

The fourth proportional to 108,032.60, 161,911.20 and 60,647.60 is: 90,894.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,032.60 : 161,911.20 = 60,647.60 : x
  2. Step 2: Convert to fraction form
    108,032.60/161,911.20 = 60,647.60/x
  3. Step 3: Cross multiply
    108,032.60x = 161,911.20 × 60,647.60
  4. Step 4: Simplify right side
    108,032.60x = 9,819,525,693.12
  5. Step 5: Solve for x
    x = 9,819,525,693.12/108,032.60
  6. Step 6: Final answer
    x = 90,894.10

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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.