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Finding the Fourth Proportional to 59,990.99, 89,887.86 and 20,526.57

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Solution

The fourth proportional to 59,990.99, 89,887.86 and 20,526.57 is: 30,756.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,990.99 : 89,887.86 = 20,526.57 : x
  2. Step 2: Convert to fraction form
    59,990.99/89,887.86 = 20,526.57/x
  3. Step 3: Cross multiply
    59,990.99x = 89,887.86 × 20,526.57
  4. Step 4: Simplify right side
    59,990.99x = 1,845,089,450.44
  5. Step 5: Solve for x
    x = 1,845,089,450.44/59,990.99
  6. Step 6: Final answer
    x = 30,756.11

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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.