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Finding the Fourth Proportional to 61,987.84, 85,539.72 and 33,693.32

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Solution

The fourth proportional to 61,987.84, 85,539.72 and 33,693.32 is: 46,494.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,987.84 : 85,539.72 = 33,693.32 : x
  2. Step 2: Convert to fraction form
    61,987.84/85,539.72 = 33,693.32/x
  3. Step 3: Cross multiply
    61,987.84x = 85,539.72 × 33,693.32
  4. Step 4: Simplify right side
    61,987.84x = 2,882,117,158.67
  5. Step 5: Solve for x
    x = 2,882,117,158.67/61,987.84
  6. Step 6: Final answer
    x = 46,494.88

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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.