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Finding the Fourth Proportional to 127,199.80, 190,799.70 and 38,515.60

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Solution

The fourth proportional to 127,199.80, 190,799.70 and 38,515.60 is: 57,773.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,199.80 : 190,799.70 = 38,515.60 : x
  2. Step 2: Convert to fraction form
    127,199.80/190,799.70 = 38,515.60/x
  3. Step 3: Cross multiply
    127,199.80x = 190,799.70 × 38,515.60
  4. Step 4: Simplify right side
    127,199.80x = 7,348,764,925.32
  5. Step 5: Solve for x
    x = 7,348,764,925.32/127,199.80
  6. Step 6: Final answer
    x = 57,773.40

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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.