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Finding the Fourth Proportional to 557,536.80, 769,314.60 and 328,209.60

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Solution

The fourth proportional to 557,536.80, 769,314.60 and 328,209.60 is: 452,878.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,536.80 : 769,314.60 = 328,209.60 : x
  2. Step 2: Convert to fraction form
    557,536.80/769,314.60 = 328,209.60/x
  3. Step 3: Cross multiply
    557,536.80x = 769,314.60 × 328,209.60
  4. Step 4: Simplify right side
    557,536.80x = 252,496,437,140.16
  5. Step 5: Solve for x
    x = 252,496,437,140.16/557,536.80
  6. Step 6: Final answer
    x = 452,878.51

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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.