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Finding the Fourth Proportional to 445,823.44, 668,785.89 and 161,647.81

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Solution

The fourth proportional to 445,823.44, 668,785.89 and 161,647.81 is: 242,490.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,823.44 : 668,785.89 = 161,647.81 : x
  2. Step 2: Convert to fraction form
    445,823.44/668,785.89 = 161,647.81/x
  3. Step 3: Cross multiply
    445,823.44x = 668,785.89 × 161,647.81
  4. Step 4: Simplify right side
    445,823.44x = 108,107,774,477.40
  5. Step 5: Solve for x
    x = 108,107,774,477.40/445,823.44
  6. Step 6: Final answer
    x = 242,490.11

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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.