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Finding the Fourth Proportional to 113,899.20, 170,848.80 and 50,719.20

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Solution

The fourth proportional to 113,899.20, 170,848.80 and 50,719.20 is: 76,078.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,899.20 : 170,848.80 = 50,719.20 : x
  2. Step 2: Convert to fraction form
    113,899.20/170,848.80 = 50,719.20/x
  3. Step 3: Cross multiply
    113,899.20x = 170,848.80 × 50,719.20
  4. Step 4: Simplify right side
    113,899.20x = 8,665,314,456.96
  5. Step 5: Solve for x
    x = 8,665,314,456.96/113,899.20
  6. Step 6: Final answer
    x = 76,078.80

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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.