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Finding the Fourth Proportional to 29,777.60, 41,048.16 and 18,580.16

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Solution

The fourth proportional to 29,777.60, 41,048.16 and 18,580.16 is: 25,612.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,777.60 : 41,048.16 = 18,580.16 : x
  2. Step 2: Convert to fraction form
    29,777.60/41,048.16 = 18,580.16/x
  3. Step 3: Cross multiply
    29,777.60x = 41,048.16 × 18,580.16
  4. Step 4: Simplify right side
    29,777.60x = 762,681,380.51
  5. Step 5: Solve for x
    x = 762,681,380.51/29,777.60
  6. Step 6: Final answer
    x = 25,612.59

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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.