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Finding the Fourth Proportional to 656,067.60, 980,506.44 and 478,947.60

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Solution

The fourth proportional to 656,067.60, 980,506.44 and 478,947.60 is: 715,796.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,067.60 : 980,506.44 = 478,947.60 : x
  2. Step 2: Convert to fraction form
    656,067.60/980,506.44 = 478,947.60/x
  3. Step 3: Cross multiply
    656,067.60x = 980,506.44 × 478,947.60
  4. Step 4: Simplify right side
    656,067.60x = 469,611,206,222.54
  5. Step 5: Solve for x
    x = 469,611,206,222.54/656,067.60
  6. Step 6: Final answer
    x = 715,796.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.