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Finding the Fourth Proportional to 289,170.38, 433,685.71 and 111,564.11

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Solution

The fourth proportional to 289,170.38, 433,685.71 and 111,564.11 is: 167,319.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,170.38 : 433,685.71 = 111,564.11 : x
  2. Step 2: Convert to fraction form
    289,170.38/433,685.71 = 111,564.11/x
  3. Step 3: Cross multiply
    289,170.38x = 433,685.71 × 111,564.11
  4. Step 4: Simplify right side
    289,170.38x = 48,383,760,255.87
  5. Step 5: Solve for x
    x = 48,383,760,255.87/289,170.38
  6. Step 6: Final answer
    x = 167,319.21

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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.