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Finding the Fourth Proportional to 56,577.81, 84,870.80 and 17,137.99

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Solution

The fourth proportional to 56,577.81, 84,870.80 and 17,137.99 is: 25,708.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,577.81 : 84,870.80 = 17,137.99 : x
  2. Step 2: Convert to fraction form
    56,577.81/84,870.80 = 17,137.99/x
  3. Step 3: Cross multiply
    56,577.81x = 84,870.80 × 17,137.99
  4. Step 4: Simplify right side
    56,577.81x = 1,454,514,921.69
  5. Step 5: Solve for x
    x = 1,454,514,921.69/56,577.81
  6. Step 6: Final answer
    x = 25,708.22

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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.