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Finding the Fourth Proportional to 605,415.56, 835,509.38 and 347,290.61

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Solution

The fourth proportional to 605,415.56, 835,509.38 and 347,290.61 is: 479,281.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,415.56 : 835,509.38 = 347,290.61 : x
  2. Step 2: Convert to fraction form
    605,415.56/835,509.38 = 347,290.61/x
  3. Step 3: Cross multiply
    605,415.56x = 835,509.38 × 347,290.61
  4. Step 4: Simplify right side
    605,415.56x = 290,164,556,326.92
  5. Step 5: Solve for x
    x = 290,164,556,326.92/605,415.56
  6. Step 6: Final answer
    x = 479,281.63

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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.