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Finding the Fourth Proportional to 189,663.72, 261,754.03 and 103,635.77

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Solution

The fourth proportional to 189,663.72, 261,754.03 and 103,635.77 is: 143,027.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,663.72 : 261,754.03 = 103,635.77 : x
  2. Step 2: Convert to fraction form
    189,663.72/261,754.03 = 103,635.77/x
  3. Step 3: Cross multiply
    189,663.72x = 261,754.03 × 103,635.77
  4. Step 4: Simplify right side
    189,663.72x = 27,127,080,449.65
  5. Step 5: Solve for x
    x = 27,127,080,449.65/189,663.72
  6. Step 6: Final answer
    x = 143,027.25

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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.