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Finding the Fourth Proportional to 539,640.34, 744,704.61 and 297,923.30

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Solution

The fourth proportional to 539,640.34, 744,704.61 and 297,923.30 is: 411,134.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,640.34 : 744,704.61 = 297,923.30 : x
  2. Step 2: Convert to fraction form
    539,640.34/744,704.61 = 297,923.30/x
  3. Step 3: Cross multiply
    539,640.34x = 744,704.61 × 297,923.30
  4. Step 4: Simplify right side
    539,640.34x = 221,864,854,936.41
  5. Step 5: Solve for x
    x = 221,864,854,936.41/539,640.34
  6. Step 6: Final answer
    x = 411,134.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.