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Finding the Fourth Proportional to 60,490.82, 90,754.68 and 30,929.40

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Solution

The fourth proportional to 60,490.82, 90,754.68 and 30,929.40 is: 46,403.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,490.82 : 90,754.68 = 30,929.40 : x
  2. Step 2: Convert to fraction form
    60,490.82/90,754.68 = 30,929.40/x
  3. Step 3: Cross multiply
    60,490.82x = 90,754.68 × 30,929.40
  4. Step 4: Simplify right side
    60,490.82x = 2,806,987,799.59
  5. Step 5: Solve for x
    x = 2,806,987,799.59/60,490.82
  6. Step 6: Final answer
    x = 46,403.53

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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.