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Finding the Fourth Proportional to 61,605.63, 85,015.71 and 33,311.25

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Solution

The fourth proportional to 61,605.63, 85,015.71 and 33,311.25 is: 45,969.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,605.63 : 85,015.71 = 33,311.25 : x
  2. Step 2: Convert to fraction form
    61,605.63/85,015.71 = 33,311.25/x
  3. Step 3: Cross multiply
    61,605.63x = 85,015.71 × 33,311.25
  4. Step 4: Simplify right side
    61,605.63x = 2,831,979,569.74
  5. Step 5: Solve for x
    x = 2,831,979,569.74/61,605.63
  6. Step 6: Final answer
    x = 45,969.49

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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.