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Finding the Fourth Proportional to 61,157.07, 91,734.80 and 16,783.79

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Solution

The fourth proportional to 61,157.07, 91,734.80 and 16,783.79 is: 25,175.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,157.07 : 91,734.80 = 16,783.79 : x
  2. Step 2: Convert to fraction form
    61,157.07/91,734.80 = 16,783.79/x
  3. Step 3: Cross multiply
    61,157.07x = 91,734.80 × 16,783.79
  4. Step 4: Simplify right side
    61,157.07x = 1,539,657,076.30
  5. Step 5: Solve for x
    x = 1,539,657,076.30/61,157.07
  6. Step 6: Final answer
    x = 25,175.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.