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Finding the Fourth Proportional to 605,005.70, 835,656.09 and 443,605.10

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Solution

The fourth proportional to 605,005.70, 835,656.09 and 443,605.10 is: 612,723.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,005.70 : 835,656.09 = 443,605.10 : x
  2. Step 2: Convert to fraction form
    605,005.70/835,656.09 = 443,605.10/x
  3. Step 3: Cross multiply
    605,005.70x = 835,656.09 × 443,605.10
  4. Step 4: Simplify right side
    605,005.70x = 370,701,303,370.06
  5. Step 5: Solve for x
    x = 370,701,303,370.06/605,005.70
  6. Step 6: Final answer
    x = 612,723.65

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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.