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Finding the Fourth Proportional to 61,905.15, 85,430.04 and 33,610.83

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Solution

The fourth proportional to 61,905.15, 85,430.04 and 33,610.83 is: 46,383.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,905.15 : 85,430.04 = 33,610.83 : x
  2. Step 2: Convert to fraction form
    61,905.15/85,430.04 = 33,610.83/x
  3. Step 3: Cross multiply
    61,905.15x = 85,430.04 × 33,610.83
  4. Step 4: Simplify right side
    61,905.15x = 2,871,374,551.33
  5. Step 5: Solve for x
    x = 2,871,374,551.33/61,905.15
  6. Step 6: Final answer
    x = 46,383.45

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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.