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Finding the Fourth Proportional to 618,597.70, 851,609.90 and 554,824.78

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Solution

The fourth proportional to 618,597.70, 851,609.90 and 554,824.78 is: 763,815.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,597.70 : 851,609.90 = 554,824.78 : x
  2. Step 2: Convert to fraction form
    618,597.70/851,609.90 = 554,824.78/x
  3. Step 3: Cross multiply
    618,597.70x = 851,609.90 × 554,824.78
  4. Step 4: Simplify right side
    618,597.70x = 472,494,275,413.32
  5. Step 5: Solve for x
    x = 472,494,275,413.32/618,597.70
  6. Step 6: Final answer
    x = 763,815.12

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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.