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Finding the Fourth Proportional to 56,406.66, 84,609.99 and 28,724.10

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Solution

The fourth proportional to 56,406.66, 84,609.99 and 28,724.10 is: 43,086.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,406.66 : 84,609.99 = 28,724.10 : x
  2. Step 2: Convert to fraction form
    56,406.66/84,609.99 = 28,724.10/x
  3. Step 3: Cross multiply
    56,406.66x = 84,609.99 × 28,724.10
  4. Step 4: Simplify right side
    56,406.66x = 2,430,345,813.76
  5. Step 5: Solve for x
    x = 2,430,345,813.76/56,406.66
  6. Step 6: Final answer
    x = 43,086.15

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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.