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Finding the Fourth Proportional to 56,443.20, 84,664.80 and 49,882.20

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Solution

The fourth proportional to 56,443.20, 84,664.80 and 49,882.20 is: 74,823.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,443.20 : 84,664.80 = 49,882.20 : x
  2. Step 2: Convert to fraction form
    56,443.20/84,664.80 = 49,882.20/x
  3. Step 3: Cross multiply
    56,443.20x = 84,664.80 × 49,882.20
  4. Step 4: Simplify right side
    56,443.20x = 4,223,266,486.56
  5. Step 5: Solve for x
    x = 4,223,266,486.56/56,443.20
  6. Step 6: Final answer
    x = 74,823.30

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1.5x scale

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.