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Finding the Fourth Proportional to 269,513.40, 404,270.10 and 190,781.40

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Solution

The fourth proportional to 269,513.40, 404,270.10 and 190,781.40 is: 286,172.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,513.40 : 404,270.10 = 190,781.40 : x
  2. Step 2: Convert to fraction form
    269,513.40/404,270.10 = 190,781.40/x
  3. Step 3: Cross multiply
    269,513.40x = 404,270.10 × 190,781.40
  4. Step 4: Simplify right side
    269,513.40x = 77,127,215,656.14
  5. Step 5: Solve for x
    x = 77,127,215,656.14/269,513.40
  6. Step 6: Final answer
    x = 286,172.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.