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Finding the Fourth Proportional to 281,955.89, 389,110.37 and 154,636.13

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Solution

The fourth proportional to 281,955.89, 389,110.37 and 154,636.13 is: 213,404.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,955.89 : 389,110.37 = 154,636.13 : x
  2. Step 2: Convert to fraction form
    281,955.89/389,110.37 = 154,636.13/x
  3. Step 3: Cross multiply
    281,955.89x = 389,110.37 × 154,636.13
  4. Step 4: Simplify right side
    281,955.89x = 60,170,520,986.49
  5. Step 5: Solve for x
    x = 60,170,520,986.49/281,955.89
  6. Step 6: Final answer
    x = 213,404.02

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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.