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Finding the Fourth Proportional to 118,857.54, 178,284.96 and 28,900.77

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Solution

The fourth proportional to 118,857.54, 178,284.96 and 28,900.77 is: 43,350.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,857.54 : 178,284.96 = 28,900.77 : x
  2. Step 2: Convert to fraction form
    118,857.54/178,284.96 = 28,900.77/x
  3. Step 3: Cross multiply
    118,857.54x = 178,284.96 × 28,900.77
  4. Step 4: Simplify right side
    118,857.54x = 5,152,572,623.42
  5. Step 5: Solve for x
    x = 5,152,572,623.42/118,857.54
  6. Step 6: Final answer
    x = 43,350.83

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1.5x scale

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.