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Finding the Fourth Proportional to 281,181.25, 388,034.99 and 153,858.97

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Solution

The fourth proportional to 281,181.25, 388,034.99 and 153,858.97 is: 212,328.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,181.25 : 388,034.99 = 153,858.97 : x
  2. Step 2: Convert to fraction form
    281,181.25/388,034.99 = 153,858.97/x
  3. Step 3: Cross multiply
    281,181.25x = 388,034.99 × 153,858.97
  4. Step 4: Simplify right side
    281,181.25x = 59,702,663,885.36
  5. Step 5: Solve for x
    x = 59,702,663,885.36/281,181.25
  6. Step 6: Final answer
    x = 212,328.04

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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.