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Finding the Fourth Proportional to 100,893.40, 151,348.80 and 26,012.88

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Solution

The fourth proportional to 100,893.40, 151,348.80 and 26,012.88 is: 39,021.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,893.40 : 151,348.80 = 26,012.88 : x
  2. Step 2: Convert to fraction form
    100,893.40/151,348.80 = 26,012.88/x
  3. Step 3: Cross multiply
    100,893.40x = 151,348.80 × 26,012.88
  4. Step 4: Simplify right side
    100,893.40x = 3,937,018,172.54
  5. Step 5: Solve for x
    x = 3,937,018,172.54/100,893.40
  6. Step 6: Final answer
    x = 39,021.56

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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.