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Finding the Fourth Proportional to 251,883.10, 377,816.55 and 83,411.20

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Solution

The fourth proportional to 251,883.10, 377,816.55 and 83,411.20 is: 125,114.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,883.10 : 377,816.55 = 83,411.20 : x
  2. Step 2: Convert to fraction form
    251,883.10/377,816.55 = 83,411.20/x
  3. Step 3: Cross multiply
    251,883.10x = 377,816.55 × 83,411.20
  4. Step 4: Simplify right side
    251,883.10x = 31,514,131,815.36
  5. Step 5: Solve for x
    x = 31,514,131,815.36/251,883.10
  6. Step 6: Final answer
    x = 125,114.12

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1.5x scale

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.