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Finding the Fourth Proportional to 293,105.80, 439,658.70 and 188,043.40

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Solution

The fourth proportional to 293,105.80, 439,658.70 and 188,043.40 is: 282,065.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,105.80 : 439,658.70 = 188,043.40 : x
  2. Step 2: Convert to fraction form
    293,105.80/439,658.70 = 188,043.40/x
  3. Step 3: Cross multiply
    293,105.80x = 439,658.70 × 188,043.40
  4. Step 4: Simplify right side
    293,105.80x = 82,674,916,787.58
  5. Step 5: Solve for x
    x = 82,674,916,787.58/293,105.80
  6. Step 6: Final answer
    x = 282,065.10

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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.