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Finding the Fourth Proportional to 217,278.70, 326,063.85 and 98,889.10

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Solution

The fourth proportional to 217,278.70, 326,063.85 and 98,889.10 is: 148,400.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,278.70 : 326,063.85 = 98,889.10 : x
  2. Step 2: Convert to fraction form
    217,278.70/326,063.85 = 98,889.10/x
  3. Step 3: Cross multiply
    217,278.70x = 326,063.85 × 98,889.10
  4. Step 4: Simplify right side
    217,278.70x = 32,244,160,669.04
  5. Step 5: Solve for x
    x = 32,244,160,669.04/217,278.70
  6. Step 6: Final answer
    x = 148,400.01

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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.