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Finding the Fourth Proportional to 32,788.50, 45,231.93 and 20,683.50

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Solution

The fourth proportional to 32,788.50, 45,231.93 and 20,683.50 is: 28,533.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,788.50 : 45,231.93 = 20,683.50 : x
  2. Step 2: Convert to fraction form
    32,788.50/45,231.93 = 20,683.50/x
  3. Step 3: Cross multiply
    32,788.50x = 45,231.93 × 20,683.50
  4. Step 4: Simplify right side
    32,788.50x = 935,554,624.16
  5. Step 5: Solve for x
    x = 935,554,624.16/32,788.50
  6. Step 6: Final answer
    x = 28,533.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.