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Finding the Fourth Proportional to 567,118.34, 782,622.69 and 312,469.46

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Solution

The fourth proportional to 567,118.34, 782,622.69 and 312,469.46 is: 431,207.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,118.34 : 782,622.69 = 312,469.46 : x
  2. Step 2: Convert to fraction form
    567,118.34/782,622.69 = 312,469.46/x
  3. Step 3: Cross multiply
    567,118.34x = 782,622.69 × 312,469.46
  4. Step 4: Simplify right side
    567,118.34x = 244,545,689,328.05
  5. Step 5: Solve for x
    x = 244,545,689,328.05/567,118.34
  6. Step 6: Final answer
    x = 431,207.51

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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.