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Finding the Fourth Proportional to 86,986.92, 130,529.64 and 37,061.76

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Solution

The fourth proportional to 86,986.92, 130,529.64 and 37,061.76 is: 55,613.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,986.92 : 130,529.64 = 37,061.76 : x
  2. Step 2: Convert to fraction form
    86,986.92/130,529.64 = 37,061.76/x
  3. Step 3: Cross multiply
    86,986.92x = 130,529.64 × 37,061.76
  4. Step 4: Simplify right side
    86,986.92x = 4,837,658,190.57
  5. Step 5: Solve for x
    x = 4,837,658,190.57/86,986.92
  6. Step 6: Final answer
    x = 55,613.63

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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.