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Finding the Fourth Proportional to 202,503.02, 279,452.42 and 111,865.31

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Solution

The fourth proportional to 202,503.02, 279,452.42 and 111,865.31 is: 154,373.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,503.02 : 279,452.42 = 111,865.31 : x
  2. Step 2: Convert to fraction form
    202,503.02/279,452.42 = 111,865.31/x
  3. Step 3: Cross multiply
    202,503.02x = 279,452.42 × 111,865.31
  4. Step 4: Simplify right side
    202,503.02x = 31,261,029,636.96
  5. Step 5: Solve for x
    x = 31,261,029,636.96/202,503.02
  6. Step 6: Final answer
    x = 154,373.16

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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.