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Finding the Fourth Proportional to 605,859.20, 908,788.80 and 403,780.40

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Solution

The fourth proportional to 605,859.20, 908,788.80 and 403,780.40 is: 605,670.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,859.20 : 908,788.80 = 403,780.40 : x
  2. Step 2: Convert to fraction form
    605,859.20/908,788.80 = 403,780.40/x
  3. Step 3: Cross multiply
    605,859.20x = 908,788.80 × 403,780.40
  4. Step 4: Simplify right side
    605,859.20x = 366,951,105,179.52
  5. Step 5: Solve for x
    x = 366,951,105,179.52/605,859.20
  6. Step 6: Final answer
    x = 605,670.60

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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.