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Finding the Fourth Proportional to 127,261.60, 190,892.40 and 117,638.80

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Solution

The fourth proportional to 127,261.60, 190,892.40 and 117,638.80 is: 176,458.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,261.60 : 190,892.40 = 117,638.80 : x
  2. Step 2: Convert to fraction form
    127,261.60/190,892.40 = 117,638.80/x
  3. Step 3: Cross multiply
    127,261.60x = 190,892.40 × 117,638.80
  4. Step 4: Simplify right side
    127,261.60x = 22,456,352,865.12
  5. Step 5: Solve for x
    x = 22,456,352,865.12/127,261.60
  6. Step 6: Final answer
    x = 176,458.20

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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.