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Finding the Fourth Proportional to 56,693.80, 85,048.52 and 19,243.82

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Solution

The fourth proportional to 56,693.80, 85,048.52 and 19,243.82 is: 28,868.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,693.80 : 85,048.52 = 19,243.82 : x
  2. Step 2: Convert to fraction form
    56,693.80/85,048.52 = 19,243.82/x
  3. Step 3: Cross multiply
    56,693.80x = 85,048.52 × 19,243.82
  4. Step 4: Simplify right side
    56,693.80x = 1,636,657,888.68
  5. Step 5: Solve for x
    x = 1,636,657,888.68/56,693.80
  6. Step 6: Final answer
    x = 28,868.37

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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.