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Finding the Fourth Proportional to 281,185.14, 388,019.22 and 153,863.22

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Solution

The fourth proportional to 281,185.14, 388,019.22 and 153,863.22 is: 212,322.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,185.14 : 388,019.22 = 153,863.22 : x
  2. Step 2: Convert to fraction form
    281,185.14/388,019.22 = 153,863.22/x
  3. Step 3: Cross multiply
    281,185.14x = 388,019.22 × 153,863.22
  4. Step 4: Simplify right side
    281,185.14x = 59,701,886,611.09
  5. Step 5: Solve for x
    x = 59,701,886,611.09/281,185.14
  6. Step 6: Final answer
    x = 212,322.34

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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.