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Finding the Fourth Proportional to 164,820.70, 247,231.05 and 161,904.70

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Solution

The fourth proportional to 164,820.70, 247,231.05 and 161,904.70 is: 242,857.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,820.70 : 247,231.05 = 161,904.70 : x
  2. Step 2: Convert to fraction form
    164,820.70/247,231.05 = 161,904.70/x
  3. Step 3: Cross multiply
    164,820.70x = 247,231.05 × 161,904.70
  4. Step 4: Simplify right side
    164,820.70x = 40,027,868,980.94
  5. Step 5: Solve for x
    x = 40,027,868,980.94/164,820.70
  6. Step 6: Final answer
    x = 242,857.05

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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.