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Finding the Fourth Proportional to 557,345.19, 769,137.84 and 327,911.12

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Solution

The fourth proportional to 557,345.19, 769,137.84 and 327,911.12 is: 452,518.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,345.19 : 769,137.84 = 327,911.12 : x
  2. Step 2: Convert to fraction form
    557,345.19/769,137.84 = 327,911.12/x
  3. Step 3: Cross multiply
    557,345.19x = 769,137.84 × 327,911.12
  4. Step 4: Simplify right side
    557,345.19x = 252,208,850,548.78
  5. Step 5: Solve for x
    x = 252,208,850,548.78/557,345.19
  6. Step 6: Final answer
    x = 452,518.22

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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.