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Finding the Fourth Proportional to 60,491.82, 90,756.15 and 30,930.42

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Solution

The fourth proportional to 60,491.82, 90,756.15 and 30,930.42 is: 46,405.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,491.82 : 90,756.15 = 30,930.42 : x
  2. Step 2: Convert to fraction form
    60,491.82/90,756.15 = 30,930.42/x
  3. Step 3: Cross multiply
    60,491.82x = 90,756.15 × 30,930.42
  4. Step 4: Simplify right side
    60,491.82x = 2,807,125,837.08
  5. Step 5: Solve for x
    x = 2,807,125,837.08/60,491.82
  6. Step 6: Final answer
    x = 46,405.05

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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.