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Finding the Fourth Proportional to 37,620.63, 51,916.47 and 20,853.63

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Solution

The fourth proportional to 37,620.63, 51,916.47 and 20,853.63 is: 28,778.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,620.63 : 51,916.47 = 20,853.63 : x
  2. Step 2: Convert to fraction form
    37,620.63/51,916.47 = 20,853.63/x
  3. Step 3: Cross multiply
    37,620.63x = 51,916.47 × 20,853.63
  4. Step 4: Simplify right side
    37,620.63x = 1,082,646,856.29
  5. Step 5: Solve for x
    x = 1,082,646,856.29/37,620.63
  6. Step 6: Final answer
    x = 28,778.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.