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Finding the Fourth Proportional to 61,287.71, 84,563.87 and 35,782.47

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Solution

The fourth proportional to 61,287.71, 84,563.87 and 35,782.47 is: 49,372.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,287.71 : 84,563.87 = 35,782.47 : x
  2. Step 2: Convert to fraction form
    61,287.71/84,563.87 = 35,782.47/x
  3. Step 3: Cross multiply
    61,287.71x = 84,563.87 × 35,782.47
  4. Step 4: Simplify right side
    61,287.71x = 3,025,903,962.45
  5. Step 5: Solve for x
    x = 3,025,903,962.45/61,287.71
  6. Step 6: Final answer
    x = 49,372.12

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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.