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Finding the Fourth Proportional to 61,608.09, 85,019.26 and 33,313.78

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Solution

The fourth proportional to 61,608.09, 85,019.26 and 33,313.78 is: 45,973.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,608.09 : 85,019.26 = 33,313.78 : x
  2. Step 2: Convert to fraction form
    61,608.09/85,019.26 = 33,313.78/x
  3. Step 3: Cross multiply
    61,608.09x = 85,019.26 × 33,313.78
  4. Step 4: Simplify right side
    61,608.09x = 2,832,312,923.40
  5. Step 5: Solve for x
    x = 2,832,312,923.40/61,608.09
  6. Step 6: Final answer
    x = 45,973.07

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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.