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Finding the Fourth Proportional to 139,512.60, 209,268.90 and 127,265.40

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Solution

The fourth proportional to 139,512.60, 209,268.90 and 127,265.40 is: 190,898.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,512.60 : 209,268.90 = 127,265.40 : x
  2. Step 2: Convert to fraction form
    139,512.60/209,268.90 = 127,265.40/x
  3. Step 3: Cross multiply
    139,512.60x = 209,268.90 × 127,265.40
  4. Step 4: Simplify right side
    139,512.60x = 26,632,690,266.06
  5. Step 5: Solve for x
    x = 26,632,690,266.06/139,512.60
  6. Step 6: Final answer
    x = 190,898.10

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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.