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Finding the Fourth Proportional to 356,679.12, 534,863.14 and 134,907.60

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Solution

The fourth proportional to 356,679.12, 534,863.14 and 134,907.60 is: 202,302.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,679.12 : 534,863.14 = 134,907.60 : x
  2. Step 2: Convert to fraction form
    356,679.12/534,863.14 = 134,907.60/x
  3. Step 3: Cross multiply
    356,679.12x = 534,863.14 × 134,907.60
  4. Step 4: Simplify right side
    356,679.12x = 72,157,102,545.86
  5. Step 5: Solve for x
    x = 72,157,102,545.86/356,679.12
  6. Step 6: Final answer
    x = 202,302.57

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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.