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Finding the Fourth Proportional to 29,409.64, 40,584.08 and 15,980.44

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Solution

The fourth proportional to 29,409.64, 40,584.08 and 15,980.44 is: 22,052.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,409.64 : 40,584.08 = 15,980.44 : x
  2. Step 2: Convert to fraction form
    29,409.64/40,584.08 = 15,980.44/x
  3. Step 3: Cross multiply
    29,409.64x = 40,584.08 × 15,980.44
  4. Step 4: Simplify right side
    29,409.64x = 648,551,455.40
  5. Step 5: Solve for x
    x = 648,551,455.40/29,409.64
  6. Step 6: Final answer
    x = 22,052.34

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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.