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Finding the Fourth Proportional to 447,897.78, 671,941.44 and 148,361.40

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Solution

The fourth proportional to 447,897.78, 671,941.44 and 148,361.40 is: 222,573.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,897.78 : 671,941.44 = 148,361.40 : x
  2. Step 2: Convert to fraction form
    447,897.78/671,941.44 = 148,361.40/x
  3. Step 3: Cross multiply
    447,897.78x = 671,941.44 × 148,361.40
  4. Step 4: Simplify right side
    447,897.78x = 99,690,172,756.42
  5. Step 5: Solve for x
    x = 99,690,172,756.42/447,897.78
  6. Step 6: Final answer
    x = 222,573.49

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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.