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Finding the Fourth Proportional to 356,553.60, 534,830.40 and 156,661.80

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Solution

The fourth proportional to 356,553.60, 534,830.40 and 156,661.80 is: 234,992.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,553.60 : 534,830.40 = 156,661.80 : x
  2. Step 2: Convert to fraction form
    356,553.60/534,830.40 = 156,661.80/x
  3. Step 3: Cross multiply
    356,553.60x = 534,830.40 × 156,661.80
  4. Step 4: Simplify right side
    356,553.60x = 83,787,493,158.72
  5. Step 5: Solve for x
    x = 83,787,493,158.72/356,553.60
  6. Step 6: Final answer
    x = 234,992.70

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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.