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Finding the Fourth Proportional to 42,994.48, 64,479.48 and 16,693.60

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Solution

The fourth proportional to 42,994.48, 64,479.48 and 16,693.60 is: 25,035.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,994.48 : 64,479.48 = 16,693.60 : x
  2. Step 2: Convert to fraction form
    42,994.48/64,479.48 = 16,693.60/x
  3. Step 3: Cross multiply
    42,994.48x = 64,479.48 × 16,693.60
  4. Step 4: Simplify right side
    42,994.48x = 1,076,394,647.33
  5. Step 5: Solve for x
    x = 1,076,394,647.33/42,994.48
  6. Step 6: Final answer
    x = 25,035.65

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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.