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Finding the Fourth Proportional to 108,041.77, 162,079.94 and 45,712.81

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Solution

The fourth proportional to 108,041.77, 162,079.94 and 45,712.81 is: 68,576.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,041.77 : 162,079.94 = 45,712.81 : x
  2. Step 2: Convert to fraction form
    108,041.77/162,079.94 = 45,712.81/x
  3. Step 3: Cross multiply
    108,041.77x = 162,079.94 × 45,712.81
  4. Step 4: Simplify right side
    108,041.77x = 7,409,129,502.03
  5. Step 5: Solve for x
    x = 7,409,129,502.03/108,041.77
  6. Step 6: Final answer
    x = 68,576.53

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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.