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Finding the Fourth Proportional to 411,278.60, 616,982.70 and 130,824.20

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Solution

The fourth proportional to 411,278.60, 616,982.70 and 130,824.20 is: 196,256.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,278.60 : 616,982.70 = 130,824.20 : x
  2. Step 2: Convert to fraction form
    411,278.60/616,982.70 = 130,824.20/x
  3. Step 3: Cross multiply
    411,278.60x = 616,982.70 × 130,824.20
  4. Step 4: Simplify right side
    411,278.60x = 80,716,268,141.34
  5. Step 5: Solve for x
    x = 80,716,268,141.34/411,278.60
  6. Step 6: Final answer
    x = 196,256.91

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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.