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Finding the Fourth Proportional to 165,907.70, 248,861.55 and 55,099.70

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Solution

The fourth proportional to 165,907.70, 248,861.55 and 55,099.70 is: 82,649.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,907.70 : 248,861.55 = 55,099.70 : x
  2. Step 2: Convert to fraction form
    165,907.70/248,861.55 = 55,099.70/x
  3. Step 3: Cross multiply
    165,907.70x = 248,861.55 × 55,099.70
  4. Step 4: Simplify right side
    165,907.70x = 13,712,196,746.54
  5. Step 5: Solve for x
    x = 13,712,196,746.54/165,907.70
  6. Step 6: Final answer
    x = 82,649.55

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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.