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Finding the Fourth Proportional to 127,504.40, 190,819.20 and 117,006.80

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Solution

The fourth proportional to 127,504.40, 190,819.20 and 117,006.80 is: 175,108.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,504.40 : 190,819.20 = 117,006.80 : x
  2. Step 2: Convert to fraction form
    127,504.40/190,819.20 = 117,006.80/x
  3. Step 3: Cross multiply
    127,504.40x = 190,819.20 × 117,006.80
  4. Step 4: Simplify right side
    127,504.40x = 22,327,143,970.56
  5. Step 5: Solve for x
    x = 22,327,143,970.56/127,504.40
  6. Step 6: Final answer
    x = 175,108.81

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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.