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Finding the Fourth Proportional to 638,047.70, 957,201.15 and 217,366.10

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Solution

The fourth proportional to 638,047.70, 957,201.15 and 217,366.10 is: 326,093.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,047.70 : 957,201.15 = 217,366.10 : x
  2. Step 2: Convert to fraction form
    638,047.70/957,201.15 = 217,366.10/x
  3. Step 3: Cross multiply
    638,047.70x = 957,201.15 × 217,366.10
  4. Step 4: Simplify right side
    638,047.70x = 208,063,080,891.02
  5. Step 5: Solve for x
    x = 208,063,080,891.02/638,047.70
  6. Step 6: Final answer
    x = 326,093.30

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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.