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Finding the Fourth Proportional to 69,987.34, 96,583.98 and 39,361.02

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Solution

The fourth proportional to 69,987.34, 96,583.98 and 39,361.02 is: 54,319.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,987.34 : 96,583.98 = 39,361.02 : x
  2. Step 2: Convert to fraction form
    69,987.34/96,583.98 = 39,361.02/x
  3. Step 3: Cross multiply
    69,987.34x = 96,583.98 × 39,361.02
  4. Step 4: Simplify right side
    69,987.34x = 3,801,643,820.86
  5. Step 5: Solve for x
    x = 3,801,643,820.86/69,987.34
  6. Step 6: Final answer
    x = 54,319.02

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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.