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Finding the Fourth Proportional to 108,523.80, 162,785.70 and 61,867.80

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Solution

The fourth proportional to 108,523.80, 162,785.70 and 61,867.80 is: 92,801.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,523.80 : 162,785.70 = 61,867.80 : x
  2. Step 2: Convert to fraction form
    108,523.80/162,785.70 = 61,867.80/x
  3. Step 3: Cross multiply
    108,523.80x = 162,785.70 × 61,867.80
  4. Step 4: Simplify right side
    108,523.80x = 10,071,193,130.46
  5. Step 5: Solve for x
    x = 10,071,193,130.46/108,523.80
  6. Step 6: Final answer
    x = 92,801.70

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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.