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Finding the Fourth Proportional to 611,894.12, 844,413 and 339,987.04

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Solution

The fourth proportional to 611,894.12, 844,413 and 339,987.04 is: 469,181.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,894.12 : 844,413 = 339,987.04 : x
  2. Step 2: Convert to fraction form
    611,894.12/844,413 = 339,987.04/x
  3. Step 3: Cross multiply
    611,894.12x = 844,413 × 339,987.04
  4. Step 4: Simplify right side
    611,894.12x = 287,089,476,407.52
  5. Step 5: Solve for x
    x = 287,089,476,407.52/611,894.12
  6. Step 6: Final answer
    x = 469,181.62

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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.