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Finding the Fourth Proportional to 118,785.92, 178,023.36 and 48,583.04

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Solution

The fourth proportional to 118,785.92, 178,023.36 and 48,583.04 is: 72,810.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,785.92 : 178,023.36 = 48,583.04 : x
  2. Step 2: Convert to fraction form
    118,785.92/178,023.36 = 48,583.04/x
  3. Step 3: Cross multiply
    118,785.92x = 178,023.36 × 48,583.04
  4. Step 4: Simplify right side
    118,785.92x = 8,648,916,019.81
  5. Step 5: Solve for x
    x = 8,648,916,019.81/118,785.92
  6. Step 6: Final answer
    x = 72,810.95

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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.