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Finding the Fourth Proportional to 193,616.60, 290,424.90 and 127,261.40

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Solution

The fourth proportional to 193,616.60, 290,424.90 and 127,261.40 is: 190,892.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,616.60 : 290,424.90 = 127,261.40 : x
  2. Step 2: Convert to fraction form
    193,616.60/290,424.90 = 127,261.40/x
  3. Step 3: Cross multiply
    193,616.60x = 290,424.90 × 127,261.40
  4. Step 4: Simplify right side
    193,616.60x = 36,959,879,368.86
  5. Step 5: Solve for x
    x = 36,959,879,368.86/193,616.60
  6. Step 6: Final answer
    x = 190,892.10

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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.