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Finding the Fourth Proportional to 276,866.40, 415,395.96 and 87,356.01

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Solution

The fourth proportional to 276,866.40, 415,395.96 and 87,356.01 is: 131,064.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,866.40 : 415,395.96 = 87,356.01 : x
  2. Step 2: Convert to fraction form
    276,866.40/415,395.96 = 87,356.01/x
  3. Step 3: Cross multiply
    276,866.40x = 415,395.96 × 87,356.01
  4. Step 4: Simplify right side
    276,866.40x = 36,287,333,635.72
  5. Step 5: Solve for x
    x = 36,287,333,635.72/276,866.40
  6. Step 6: Final answer
    x = 131,064.42

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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.