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Finding the Fourth Proportional to 268,505.76, 402,939.60 and 110,730.72

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Solution

The fourth proportional to 268,505.76, 402,939.60 and 110,730.72 is: 166,170.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,505.76 : 402,939.60 = 110,730.72 : x
  2. Step 2: Convert to fraction form
    268,505.76/402,939.60 = 110,730.72/x
  3. Step 3: Cross multiply
    268,505.76x = 402,939.60 × 110,730.72
  4. Step 4: Simplify right side
    268,505.76x = 44,617,792,024.51
  5. Step 5: Solve for x
    x = 44,617,792,024.51/268,505.76
  6. Step 6: Final answer
    x = 166,170.71

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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.