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Finding the Fourth Proportional to 56,798.48, 85,235.64 and 19,862.48

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Solution

The fourth proportional to 56,798.48, 85,235.64 and 19,862.48 is: 29,806.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,798.48 : 85,235.64 = 19,862.48 : x
  2. Step 2: Convert to fraction form
    56,798.48/85,235.64 = 19,862.48/x
  3. Step 3: Cross multiply
    56,798.48x = 85,235.64 × 19,862.48
  4. Step 4: Simplify right side
    56,798.48x = 1,692,991,194.79
  5. Step 5: Solve for x
    x = 1,692,991,194.79/56,798.48
  6. Step 6: Final answer
    x = 29,806.98

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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.