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Finding the Fourth Proportional to 99,512.56, 137,305.10 and 83,444.86

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Solution

The fourth proportional to 99,512.56, 137,305.10 and 83,444.86 is: 115,135.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,512.56 : 137,305.10 = 83,444.86 : x
  2. Step 2: Convert to fraction form
    99,512.56/137,305.10 = 83,444.86/x
  3. Step 3: Cross multiply
    99,512.56x = 137,305.10 × 83,444.86
  4. Step 4: Simplify right side
    99,512.56x = 11,457,405,227.03
  5. Step 5: Solve for x
    x = 11,457,405,227.03/99,512.56
  6. Step 6: Final answer
    x = 115,135.27

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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.