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Finding the Fourth Proportional to 56,520.92, 84,729.54 and 19,559

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Solution

The fourth proportional to 56,520.92, 84,729.54 and 19,559 is: 29,320.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,520.92 : 84,729.54 = 19,559 : x
  2. Step 2: Convert to fraction form
    56,520.92/84,729.54 = 19,559/x
  3. Step 3: Cross multiply
    56,520.92x = 84,729.54 × 19,559
  4. Step 4: Simplify right side
    56,520.92x = 1,657,225,072.86
  5. Step 5: Solve for x
    x = 1,657,225,072.86/56,520.92
  6. Step 6: Final answer
    x = 29,320.56

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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.