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Finding the Fourth Proportional to 189,679.77, 261,755.01 and 103,636.91

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Solution

The fourth proportional to 189,679.77, 261,755.01 and 103,636.91 is: 143,017.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,679.77 : 261,755.01 = 103,636.91 : x
  2. Step 2: Convert to fraction form
    189,679.77/261,755.01 = 103,636.91/x
  3. Step 3: Cross multiply
    189,679.77x = 261,755.01 × 103,636.91
  4. Step 4: Simplify right side
    189,679.77x = 27,127,479,104.64
  5. Step 5: Solve for x
    x = 27,127,479,104.64/189,679.77
  6. Step 6: Final answer
    x = 143,017.25

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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.