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Finding the Fourth Proportional to 193,758.86, 290,703.90 and 87,131.67

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Solution

The fourth proportional to 193,758.86, 290,703.90 and 87,131.67 is: 130,727.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,758.86 : 290,703.90 = 87,131.67 : x
  2. Step 2: Convert to fraction form
    193,758.86/290,703.90 = 87,131.67/x
  3. Step 3: Cross multiply
    193,758.86x = 290,703.90 × 87,131.67
  4. Step 4: Simplify right side
    193,758.86x = 25,329,516,282.51
  5. Step 5: Solve for x
    x = 25,329,516,282.51/193,758.86
  6. Step 6: Final answer
    x = 130,727.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.