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Finding the Fourth Proportional to 548,622.30, 757,168.47 and 306,918.30

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Solution

The fourth proportional to 548,622.30, 757,168.47 and 306,918.30 is: 423,586.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,622.30 : 757,168.47 = 306,918.30 : x
  2. Step 2: Convert to fraction form
    548,622.30/757,168.47 = 306,918.30/x
  3. Step 3: Cross multiply
    548,622.30x = 757,168.47 × 306,918.30
  4. Step 4: Simplify right side
    548,622.30x = 232,388,859,626.00
  5. Step 5: Solve for x
    x = 232,388,859,626.00/548,622.30
  6. Step 6: Final answer
    x = 423,586.24

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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.