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Finding the Fourth Proportional to 554,792,305.64, 765,603,998.88 and 307,268,345.48

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Solution

The fourth proportional to 554,792,305.64, 765,603,998.88 and 307,268,345.48 is: 424,025,120.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,792,305.64 : 765,603,998.88 = 307,268,345.48 : x
  2. Step 2: Convert to fraction form
    554,792,305.64/765,603,998.88 = 307,268,345.48/x
  3. Step 3: Cross multiply
    554,792,305.64x = 765,603,998.88 × 307,268,345.48
  4. Step 4: Simplify right side
    554,792,305.64x = 235,245,874,028,729,376
  5. Step 5: Solve for x
    x = 235,245,874,028,729,376/554,792,305.64
  6. Step 6: Final answer
    x = 424,025,120.10

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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.