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Finding the Fourth Proportional to 273,644.70, 410,428.65 and 86,675.10

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Solution

The fourth proportional to 273,644.70, 410,428.65 and 86,675.10 is: 130,000.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,644.70 : 410,428.65 = 86,675.10 : x
  2. Step 2: Convert to fraction form
    273,644.70/410,428.65 = 86,675.10/x
  3. Step 3: Cross multiply
    273,644.70x = 410,428.65 × 86,675.10
  4. Step 4: Simplify right side
    273,644.70x = 35,573,944,281.62
  5. Step 5: Solve for x
    x = 35,573,944,281.62/273,644.70
  6. Step 6: Final answer
    x = 130,000.49

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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.