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Finding the Fourth Proportional to 266,603.52, 367,915.30 and 145,742.60

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Solution

The fourth proportional to 266,603.52, 367,915.30 and 145,742.60 is: 201,126.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,603.52 : 367,915.30 = 145,742.60 : x
  2. Step 2: Convert to fraction form
    266,603.52/367,915.30 = 145,742.60/x
  3. Step 3: Cross multiply
    266,603.52x = 367,915.30 × 145,742.60
  4. Step 4: Simplify right side
    266,603.52x = 53,620,932,401.78
  5. Step 5: Solve for x
    x = 53,620,932,401.78/266,603.52
  6. Step 6: Final answer
    x = 201,126.12

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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.