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Finding the Fourth Proportional to 113,900.40, 170,899.20 and 54,705.60

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Solution

The fourth proportional to 113,900.40, 170,899.20 and 54,705.60 is: 82,081.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,900.40 : 170,899.20 = 54,705.60 : x
  2. Step 2: Convert to fraction form
    113,900.40/170,899.20 = 54,705.60/x
  3. Step 3: Cross multiply
    113,900.40x = 170,899.20 × 54,705.60
  4. Step 4: Simplify right side
    113,900.40x = 9,349,143,275.52
  5. Step 5: Solve for x
    x = 9,349,143,275.52/113,900.40
  6. Step 6: Final answer
    x = 82,081.74

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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.