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Finding the Fourth Proportional to 424,643.64, 636,895.96 and 125,054.25

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Solution

The fourth proportional to 424,643.64, 636,895.96 and 125,054.25 is: 187,560.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,643.64 : 636,895.96 = 125,054.25 : x
  2. Step 2: Convert to fraction form
    424,643.64/636,895.96 = 125,054.25/x
  3. Step 3: Cross multiply
    424,643.64x = 636,895.96 × 125,054.25
  4. Step 4: Simplify right side
    424,643.64x = 79,646,546,605.83
  5. Step 5: Solve for x
    x = 79,646,546,605.83/424,643.64
  6. Step 6: Final answer
    x = 187,560.91

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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.