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Finding the Fourth Proportional to 521,647.50, 719,166.76 and 445,979.44

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Solution

The fourth proportional to 521,647.50, 719,166.76 and 445,979.44 is: 614,847.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,647.50 : 719,166.76 = 445,979.44 : x
  2. Step 2: Convert to fraction form
    521,647.50/719,166.76 = 445,979.44/x
  3. Step 3: Cross multiply
    521,647.50x = 719,166.76 × 445,979.44
  4. Step 4: Simplify right side
    521,647.50x = 320,733,588,891.41
  5. Step 5: Solve for x
    x = 320,733,588,891.41/521,647.50
  6. Step 6: Final answer
    x = 614,847.36

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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.