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Finding the Fourth Proportional to 42,597.40, 63,926.34 and 19,243.48

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Solution

The fourth proportional to 42,597.40, 63,926.34 and 19,243.48 is: 28,878.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,597.40 : 63,926.34 = 19,243.48 : x
  2. Step 2: Convert to fraction form
    42,597.40/63,926.34 = 19,243.48/x
  3. Step 3: Cross multiply
    42,597.40x = 63,926.34 × 19,243.48
  4. Step 4: Simplify right side
    42,597.40x = 1,230,165,245.26
  5. Step 5: Solve for x
    x = 1,230,165,245.26/42,597.40
  6. Step 6: Final answer
    x = 28,878.88

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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.