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Finding the Fourth Proportional to 73,800.90, 110,683.35 and 21,204.90

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Solution

The fourth proportional to 73,800.90, 110,683.35 and 21,204.90 is: 31,802.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,800.90 : 110,683.35 = 21,204.90 : x
  2. Step 2: Convert to fraction form
    73,800.90/110,683.35 = 21,204.90/x
  3. Step 3: Cross multiply
    73,800.90x = 110,683.35 × 21,204.90
  4. Step 4: Simplify right side
    73,800.90x = 2,347,029,368.42
  5. Step 5: Solve for x
    x = 2,347,029,368.42/73,800.90
  6. Step 6: Final answer
    x = 31,802.18

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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.