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Finding the Fourth Proportional to 33,312.64, 45,971.46 and 18,408.64

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Solution

The fourth proportional to 33,312.64, 45,971.46 and 18,408.64 is: 25,403.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,312.64 : 45,971.46 = 18,408.64 : x
  2. Step 2: Convert to fraction form
    33,312.64/45,971.46 = 18,408.64/x
  3. Step 3: Cross multiply
    33,312.64x = 45,971.46 × 18,408.64
  4. Step 4: Simplify right side
    33,312.64x = 846,272,057.41
  5. Step 5: Solve for x
    x = 846,272,057.41/33,312.64
  6. Step 6: Final answer
    x = 25,403.93

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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.