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Finding the Fourth Proportional to 283,798.28, 391,634.29 and 154,739.16

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Solution

The fourth proportional to 283,798.28, 391,634.29 and 154,739.16 is: 213,536.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,798.28 : 391,634.29 = 154,739.16 : x
  2. Step 2: Convert to fraction form
    283,798.28/391,634.29 = 154,739.16/x
  3. Step 3: Cross multiply
    283,798.28x = 391,634.29 × 154,739.16
  4. Step 4: Simplify right side
    283,798.28x = 60,601,161,255.22
  5. Step 5: Solve for x
    x = 60,601,161,255.22/283,798.28
  6. Step 6: Final answer
    x = 213,536.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.