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Finding the Fourth Proportional to 193,645.60, 289,690.80 and 167,639.20

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Solution

The fourth proportional to 193,645.60, 289,690.80 and 167,639.20 is: 250,785.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,645.60 : 289,690.80 = 167,639.20 : x
  2. Step 2: Convert to fraction form
    193,645.60/289,690.80 = 167,639.20/x
  3. Step 3: Cross multiply
    193,645.60x = 289,690.80 × 167,639.20
  4. Step 4: Simplify right side
    193,645.60x = 48,563,533,959.36
  5. Step 5: Solve for x
    x = 48,563,533,959.36/193,645.60
  6. Step 6: Final answer
    x = 250,785.63

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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.