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Finding the Fourth Proportional to 434,085.72, 599,246.21 and 289,132.71

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Solution

The fourth proportional to 434,085.72, 599,246.21 and 289,132.71 is: 399,141.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,085.72 : 599,246.21 = 289,132.71 : x
  2. Step 2: Convert to fraction form
    434,085.72/599,246.21 = 289,132.71/x
  3. Step 3: Cross multiply
    434,085.72x = 599,246.21 × 289,132.71
  4. Step 4: Simplify right side
    434,085.72x = 173,261,681,377.36
  5. Step 5: Solve for x
    x = 173,261,681,377.36/434,085.72
  6. Step 6: Final answer
    x = 399,141.63

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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.