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Finding the Fourth Proportional to 290,985.16, 401,417.22 and 177,611.08

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Solution

The fourth proportional to 290,985.16, 401,417.22 and 177,611.08 is: 245,016.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,985.16 : 401,417.22 = 177,611.08 : x
  2. Step 2: Convert to fraction form
    290,985.16/401,417.22 = 177,611.08/x
  3. Step 3: Cross multiply
    290,985.16x = 401,417.22 × 177,611.08
  4. Step 4: Simplify right side
    290,985.16x = 71,296,145,974.80
  5. Step 5: Solve for x
    x = 71,296,145,974.80/290,985.16
  6. Step 6: Final answer
    x = 245,016.43

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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.