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Finding the Fourth Proportional to 56,373.80, 84,562.76 and 18,935.11

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Solution

The fourth proportional to 56,373.80, 84,562.76 and 18,935.11 is: 28,403.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,373.80 : 84,562.76 = 18,935.11 : x
  2. Step 2: Convert to fraction form
    56,373.80/84,562.76 = 18,935.11/x
  3. Step 3: Cross multiply
    56,373.80x = 84,562.76 × 18,935.11
  4. Step 4: Simplify right side
    56,373.80x = 1,601,205,162.50
  5. Step 5: Solve for x
    x = 1,601,205,162.50/56,373.80
  6. Step 6: Final answer
    x = 28,403.36

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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.