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Finding the Fourth Proportional to 86,919.84, 130,441.92 and 37,034.88

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Solution

The fourth proportional to 86,919.84, 130,441.92 and 37,034.88 is: 55,578.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,919.84 : 130,441.92 = 37,034.88 : x
  2. Step 2: Convert to fraction form
    86,919.84/130,441.92 = 37,034.88/x
  3. Step 3: Cross multiply
    86,919.84x = 130,441.92 × 37,034.88
  4. Step 4: Simplify right side
    86,919.84x = 4,830,900,854.17
  5. Step 5: Solve for x
    x = 4,830,900,854.17/86,919.84
  6. Step 6: Final answer
    x = 55,578.81

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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.