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Finding the Fourth Proportional to 108,449.81, 149,660.71 and 60,703.16

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Solution

The fourth proportional to 108,449.81, 149,660.71 and 60,703.16 is: 83,770.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,449.81 : 149,660.71 = 60,703.16 : x
  2. Step 2: Convert to fraction form
    108,449.81/149,660.71 = 60,703.16/x
  3. Step 3: Cross multiply
    108,449.81x = 149,660.71 × 60,703.16
  4. Step 4: Simplify right side
    108,449.81x = 9,084,878,247.24
  5. Step 5: Solve for x
    x = 9,084,878,247.24/108,449.81
  6. Step 6: Final answer
    x = 83,770.35

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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.