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Finding the Fourth Proportional to 66,638.44, 99,957.52 and 17,390.44

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Solution

The fourth proportional to 66,638.44, 99,957.52 and 17,390.44 is: 26,085.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,638.44 : 99,957.52 = 17,390.44 : x
  2. Step 2: Convert to fraction form
    66,638.44/99,957.52 = 17,390.44/x
  3. Step 3: Cross multiply
    66,638.44x = 99,957.52 × 17,390.44
  4. Step 4: Simplify right side
    66,638.44x = 1,738,305,254.11
  5. Step 5: Solve for x
    x = 1,738,305,254.11/66,638.44
  6. Step 6: Final answer
    x = 26,085.62

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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.