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Finding the Fourth Proportional to 56,935.60, 85,201.80 and 49,620.40

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Solution

The fourth proportional to 56,935.60, 85,201.80 and 49,620.40 is: 74,254.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,935.60 : 85,201.80 = 49,620.40 : x
  2. Step 2: Convert to fraction form
    56,935.60/85,201.80 = 49,620.40/x
  3. Step 3: Cross multiply
    56,935.60x = 85,201.80 × 49,620.40
  4. Step 4: Simplify right side
    56,935.60x = 4,227,747,396.72
  5. Step 5: Solve for x
    x = 4,227,747,396.72/56,935.60
  6. Step 6: Final answer
    x = 74,254.90

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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.