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Finding the Fourth Proportional to 29,404.90, 40,578.06 and 15,975.86

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Solution

The fourth proportional to 29,404.90, 40,578.06 and 15,975.86 is: 22,046.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,404.90 : 40,578.06 = 15,975.86 : x
  2. Step 2: Convert to fraction form
    29,404.90/40,578.06 = 15,975.86/x
  3. Step 3: Cross multiply
    29,404.90x = 40,578.06 × 15,975.86
  4. Step 4: Simplify right side
    29,404.90x = 648,269,405.63
  5. Step 5: Solve for x
    x = 648,269,405.63/29,404.90
  6. Step 6: Final answer
    x = 22,046.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.