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Finding the Fourth Proportional to 656,805.69, 905,867.06 and 452,809.85

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Solution

The fourth proportional to 656,805.69, 905,867.06 and 452,809.85 is: 624,515.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,805.69 : 905,867.06 = 452,809.85 : x
  2. Step 2: Convert to fraction form
    656,805.69/905,867.06 = 452,809.85/x
  3. Step 3: Cross multiply
    656,805.69x = 905,867.06 × 452,809.85
  4. Step 4: Simplify right side
    656,805.69x = 410,185,520,765.16
  5. Step 5: Solve for x
    x = 410,185,520,765.16/656,805.69
  6. Step 6: Final answer
    x = 624,515.78

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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.