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Finding the Fourth Proportional to 455,716.45, 683,671.47 and 156,116.55

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Solution

The fourth proportional to 455,716.45, 683,671.47 and 156,116.55 is: 234,207.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,716.45 : 683,671.47 = 156,116.55 : x
  2. Step 2: Convert to fraction form
    455,716.45/683,671.47 = 156,116.55/x
  3. Step 3: Cross multiply
    455,716.45x = 683,671.47 × 156,116.55
  4. Step 4: Simplify right side
    455,716.45x = 106,732,431,229.83
  5. Step 5: Solve for x
    x = 106,732,431,229.83/455,716.45
  6. Step 6: Final answer
    x = 234,207.98

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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.