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Finding the Fourth Proportional to 53,331.40, 79,881.90 and 44,115.40

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Solution

The fourth proportional to 53,331.40, 79,881.90 and 44,115.40 is: 66,077.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,331.40 : 79,881.90 = 44,115.40 : x
  2. Step 2: Convert to fraction form
    53,331.40/79,881.90 = 44,115.40/x
  3. Step 3: Cross multiply
    53,331.40x = 79,881.90 × 44,115.40
  4. Step 4: Simplify right side
    53,331.40x = 3,524,021,971.26
  5. Step 5: Solve for x
    x = 3,524,021,971.26/53,331.40
  6. Step 6: Final answer
    x = 66,077.81

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1.5x scale

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.