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Finding the Fourth Proportional to 101,236.44, 139,682.70 and 58,769.76

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Solution

The fourth proportional to 101,236.44, 139,682.70 and 58,769.76 is: 81,088.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,236.44 : 139,682.70 = 58,769.76 : x
  2. Step 2: Convert to fraction form
    101,236.44/139,682.70 = 58,769.76/x
  3. Step 3: Cross multiply
    101,236.44x = 139,682.70 × 58,769.76
  4. Step 4: Simplify right side
    101,236.44x = 8,209,118,755.15
  5. Step 5: Solve for x
    x = 8,209,118,755.15/101,236.44
  6. Step 6: Final answer
    x = 81,088.58

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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.