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Finding the Fourth Proportional to 110,004.70, 165,071.85 and 72,672.70

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Solution

The fourth proportional to 110,004.70, 165,071.85 and 72,672.70 is: 109,051.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,004.70 : 165,071.85 = 72,672.70 : x
  2. Step 2: Convert to fraction form
    110,004.70/165,071.85 = 72,672.70/x
  3. Step 3: Cross multiply
    110,004.70x = 165,071.85 × 72,672.70
  4. Step 4: Simplify right side
    110,004.70x = 11,996,217,033.50
  5. Step 5: Solve for x
    x = 11,996,217,033.50/110,004.70
  6. Step 6: Final answer
    x = 109,051.86

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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.