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Finding the Fourth Proportional to 579,690.45, 799,980.71 and 434,238.56

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Solution

The fourth proportional to 579,690.45, 799,980.71 and 434,238.56 is: 599,255.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,690.45 : 799,980.71 = 434,238.56 : x
  2. Step 2: Convert to fraction form
    579,690.45/799,980.71 = 434,238.56/x
  3. Step 3: Cross multiply
    579,690.45x = 799,980.71 × 434,238.56
  4. Step 4: Simplify right side
    579,690.45x = 347,382,465,367.08
  5. Step 5: Solve for x
    x = 347,382,465,367.08/579,690.45
  6. Step 6: Final answer
    x = 599,255.11

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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.