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Finding the Fourth Proportional to 15,074.10, 22,612.50 and 3,980.64

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Solution

The fourth proportional to 15,074.10, 22,612.50 and 3,980.64 is: 5,971.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,074.10 : 22,612.50 = 3,980.64 : x
  2. Step 2: Convert to fraction form
    15,074.10/22,612.50 = 3,980.64/x
  3. Step 3: Cross multiply
    15,074.10x = 22,612.50 × 3,980.64
  4. Step 4: Simplify right side
    15,074.10x = 90,012,222
  5. Step 5: Solve for x
    x = 90,012,222/15,074.10
  6. Step 6: Final answer
    x = 5,971.32

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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.