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Finding the Fourth Proportional to 174,688.56, 262,007.28 and 85,918.20

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Solution

The fourth proportional to 174,688.56, 262,007.28 and 85,918.20 is: 128,864.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,688.56 : 262,007.28 = 85,918.20 : x
  2. Step 2: Convert to fraction form
    174,688.56/262,007.28 = 85,918.20/x
  3. Step 3: Cross multiply
    174,688.56x = 262,007.28 × 85,918.20
  4. Step 4: Simplify right side
    174,688.56x = 22,511,193,884.50
  5. Step 5: Solve for x
    x = 22,511,193,884.50/174,688.56
  6. Step 6: Final answer
    x = 128,864.73

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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.