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Finding the Fourth Proportional to 59,728.22, 89,570.98 and 19,739.80

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Solution

The fourth proportional to 59,728.22, 89,570.98 and 19,739.80 is: 29,602.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,728.22 : 89,570.98 = 19,739.80 : x
  2. Step 2: Convert to fraction form
    59,728.22/89,570.98 = 19,739.80/x
  3. Step 3: Cross multiply
    59,728.22x = 89,570.98 × 19,739.80
  4. Step 4: Simplify right side
    59,728.22x = 1,768,113,367.64
  5. Step 5: Solve for x
    x = 1,768,113,367.64/59,728.22
  6. Step 6: Final answer
    x = 29,602.65

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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.