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Finding the Fourth Proportional to 113,603.11, 156,753.83 and 65,847.13

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Solution

The fourth proportional to 113,603.11, 156,753.83 and 65,847.13 is: 90,858.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,603.11 : 156,753.83 = 65,847.13 : x
  2. Step 2: Convert to fraction form
    113,603.11/156,753.83 = 65,847.13/x
  3. Step 3: Cross multiply
    113,603.11x = 156,753.83 × 65,847.13
  4. Step 4: Simplify right side
    113,603.11x = 10,321,789,594.74
  5. Step 5: Solve for x
    x = 10,321,789,594.74/113,603.11
  6. Step 6: Final answer
    x = 90,858.34

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1.5x scale

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.