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Finding the Fourth Proportional to 193,887.80, 290,831.70 and 127,532.60

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Solution

The fourth proportional to 193,887.80, 290,831.70 and 127,532.60 is: 191,298.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,887.80 : 290,831.70 = 127,532.60 : x
  2. Step 2: Convert to fraction form
    193,887.80/290,831.70 = 127,532.60/x
  3. Step 3: Cross multiply
    193,887.80x = 290,831.70 × 127,532.60
  4. Step 4: Simplify right side
    193,887.80x = 37,090,522,863.42
  5. Step 5: Solve for x
    x = 37,090,522,863.42/193,887.80
  6. Step 6: Final answer
    x = 191,298.90

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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.