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Finding the Fourth Proportional to 108,483.90, 149,690.51 and 60,739.26

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Solution

The fourth proportional to 108,483.90, 149,690.51 and 60,739.26 is: 83,810.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,483.90 : 149,690.51 = 60,739.26 : x
  2. Step 2: Convert to fraction form
    108,483.90/149,690.51 = 60,739.26/x
  3. Step 3: Cross multiply
    108,483.90x = 149,690.51 × 60,739.26
  4. Step 4: Simplify right side
    108,483.90x = 9,092,090,806.42
  5. Step 5: Solve for x
    x = 9,092,090,806.42/108,483.90
  6. Step 6: Final answer
    x = 83,810.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.