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Finding the Fourth Proportional to 61,783.50, 85,261.32 and 33,489.48

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Solution

The fourth proportional to 61,783.50, 85,261.32 and 33,489.48 is: 46,215.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,783.50 : 85,261.32 = 33,489.48 : x
  2. Step 2: Convert to fraction form
    61,783.50/85,261.32 = 33,489.48/x
  3. Step 3: Cross multiply
    61,783.50x = 85,261.32 × 33,489.48
  4. Step 4: Simplify right side
    61,783.50x = 2,855,357,270.91
  5. Step 5: Solve for x
    x = 2,855,357,270.91/61,783.50
  6. Step 6: Final answer
    x = 46,215.53

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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.