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Finding the Fourth Proportional to 127,244.40, 190,866.60 and 80,005.20

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Solution

The fourth proportional to 127,244.40, 190,866.60 and 80,005.20 is: 120,007.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,244.40 : 190,866.60 = 80,005.20 : x
  2. Step 2: Convert to fraction form
    127,244.40/190,866.60 = 80,005.20/x
  3. Step 3: Cross multiply
    127,244.40x = 190,866.60 × 80,005.20
  4. Step 4: Simplify right side
    127,244.40x = 15,270,320,506.32
  5. Step 5: Solve for x
    x = 15,270,320,506.32/127,244.40
  6. Step 6: Final answer
    x = 120,007.80

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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.