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Finding the Fourth Proportional to 56,796.48, 85,232.64 and 19,860.48

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Solution

The fourth proportional to 56,796.48, 85,232.64 and 19,860.48 is: 29,803.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,796.48 : 85,232.64 = 19,860.48 : x
  2. Step 2: Convert to fraction form
    56,796.48/85,232.64 = 19,860.48/x
  3. Step 3: Cross multiply
    56,796.48x = 85,232.64 × 19,860.48
  4. Step 4: Simplify right side
    56,796.48x = 1,692,761,142.07
  5. Step 5: Solve for x
    x = 1,692,761,142.07/56,796.48
  6. Step 6: Final answer
    x = 29,803.98

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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.