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Finding the Fourth Proportional to 28,561.36, 42,840.40 and 7,501.36

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Solution

The fourth proportional to 28,561.36, 42,840.40 and 7,501.36 is: 11,251.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,561.36 : 42,840.40 = 7,501.36 : x
  2. Step 2: Convert to fraction form
    28,561.36/42,840.40 = 7,501.36/x
  3. Step 3: Cross multiply
    28,561.36x = 42,840.40 × 7,501.36
  4. Step 4: Simplify right side
    28,561.36x = 321,361,262.94
  5. Step 5: Solve for x
    x = 321,361,262.94/28,561.36
  6. Step 6: Final answer
    x = 11,251.61

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.