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Finding the Fourth Proportional to 461,361.80, 691,834.52 and 194,985.20

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Solution

The fourth proportional to 461,361.80, 691,834.52 and 194,985.20 is: 292,389.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,361.80 : 691,834.52 = 194,985.20 : x
  2. Step 2: Convert to fraction form
    461,361.80/691,834.52 = 194,985.20/x
  3. Step 3: Cross multiply
    461,361.80x = 691,834.52 × 194,985.20
  4. Step 4: Simplify right side
    461,361.80x = 134,897,492,249.10
  5. Step 5: Solve for x
    x = 134,897,492,249.10/461,361.80
  6. Step 6: Final answer
    x = 292,389.82

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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.