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Finding the Fourth Proportional to 657,046.80, 985,570.20 and 445,539.60

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Solution

The fourth proportional to 657,046.80, 985,570.20 and 445,539.60 is: 668,309.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,046.80 : 985,570.20 = 445,539.60 : x
  2. Step 2: Convert to fraction form
    657,046.80/985,570.20 = 445,539.60/x
  3. Step 3: Cross multiply
    657,046.80x = 985,570.20 × 445,539.60
  4. Step 4: Simplify right side
    657,046.80x = 439,110,552,679.92
  5. Step 5: Solve for x
    x = 439,110,552,679.92/657,046.80
  6. Step 6: Final answer
    x = 668,309.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.