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Finding the Fourth Proportional to 56,521.80, 84,782.70 and 53,296.20

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Solution

The fourth proportional to 56,521.80, 84,782.70 and 53,296.20 is: 79,944.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,521.80 : 84,782.70 = 53,296.20 : x
  2. Step 2: Convert to fraction form
    56,521.80/84,782.70 = 53,296.20/x
  3. Step 3: Cross multiply
    56,521.80x = 84,782.70 × 53,296.20
  4. Step 4: Simplify right side
    56,521.80x = 4,518,595,735.74
  5. Step 5: Solve for x
    x = 4,518,595,735.74/56,521.80
  6. Step 6: Final answer
    x = 79,944.30

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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.