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Finding the Fourth Proportional to 263,079.70, 363,085.50 and 148,381.90

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Solution

The fourth proportional to 263,079.70, 363,085.50 and 148,381.90 is: 204,787.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,079.70 : 363,085.50 = 148,381.90 : x
  2. Step 2: Convert to fraction form
    263,079.70/363,085.50 = 148,381.90/x
  3. Step 3: Cross multiply
    263,079.70x = 363,085.50 × 148,381.90
  4. Step 4: Simplify right side
    263,079.70x = 53,875,316,352.45
  5. Step 5: Solve for x
    x = 53,875,316,352.45/263,079.70
  6. Step 6: Final answer
    x = 204,787.05

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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.