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Finding the Fourth Proportional to 281,040.58, 387,845.22 and 153,716.18

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Solution

The fourth proportional to 281,040.58, 387,845.22 and 153,716.18 is: 212,133.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,040.58 : 387,845.22 = 153,716.18 : x
  2. Step 2: Convert to fraction form
    281,040.58/387,845.22 = 153,716.18/x
  3. Step 3: Cross multiply
    281,040.58x = 387,845.22 × 153,716.18
  4. Step 4: Simplify right side
    281,040.58x = 59,618,085,649.66
  5. Step 5: Solve for x
    x = 59,618,085,649.66/281,040.58
  6. Step 6: Final answer
    x = 212,133.37

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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.