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Finding the Fourth Proportional to 691,118.63, 953,791.57 and 419,197.98

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Solution

The fourth proportional to 691,118.63, 953,791.57 and 419,197.98 is: 578,522.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,118.63 : 953,791.57 = 419,197.98 : x
  2. Step 2: Convert to fraction form
    691,118.63/953,791.57 = 419,197.98/x
  3. Step 3: Cross multiply
    691,118.63x = 953,791.57 × 419,197.98
  4. Step 4: Simplify right side
    691,118.63x = 399,827,503,585.75
  5. Step 5: Solve for x
    x = 399,827,503,585.75/691,118.63
  6. Step 6: Final answer
    x = 578,522.25

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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.