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Finding the Fourth Proportional to 459,755.66, 689,605.72 and 171,511.80

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Solution

The fourth proportional to 459,755.66, 689,605.72 and 171,511.80 is: 257,257.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,755.66 : 689,605.72 = 171,511.80 : x
  2. Step 2: Convert to fraction form
    459,755.66/689,605.72 = 171,511.80/x
  3. Step 3: Cross multiply
    459,755.66x = 689,605.72 × 171,511.80
  4. Step 4: Simplify right side
    459,755.66x = 118,275,515,312.70
  5. Step 5: Solve for x
    x = 118,275,515,312.70/459,755.66
  6. Step 6: Final answer
    x = 257,257.33

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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.