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Finding the Fourth Proportional to 56,913.16, 85,379.02 and 21,377.26

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Solution

The fourth proportional to 56,913.16, 85,379.02 and 21,377.26 is: 32,069.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,913.16 : 85,379.02 = 21,377.26 : x
  2. Step 2: Convert to fraction form
    56,913.16/85,379.02 = 21,377.26/x
  3. Step 3: Cross multiply
    56,913.16x = 85,379.02 × 21,377.26
  4. Step 4: Simplify right side
    56,913.16x = 1,825,169,509.09
  5. Step 5: Solve for x
    x = 1,825,169,509.09/56,913.16
  6. Step 6: Final answer
    x = 32,069.38

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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.