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Finding the Fourth Proportional to 484,921.69, 669,212.70 and 270,061.76

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Solution

The fourth proportional to 484,921.69, 669,212.70 and 270,061.76 is: 372,696.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,921.69 : 669,212.70 = 270,061.76 : x
  2. Step 2: Convert to fraction form
    484,921.69/669,212.70 = 270,061.76/x
  3. Step 3: Cross multiply
    484,921.69x = 669,212.70 × 270,061.76
  4. Step 4: Simplify right side
    484,921.69x = 180,728,759,576.35
  5. Step 5: Solve for x
    x = 180,728,759,576.35/484,921.69
  6. Step 6: Final answer
    x = 372,696.79

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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.