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Finding the Fourth Proportional to 768,127.92, 1,059,846.48 and 445,650.96

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Solution

The fourth proportional to 768,127.92, 1,059,846.48 and 445,650.96 is: 614,899.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,127.92 : 1,059,846.48 = 445,650.96 : x
  2. Step 2: Convert to fraction form
    768,127.92/1,059,846.48 = 445,650.96/x
  3. Step 3: Cross multiply
    768,127.92x = 1,059,846.48 × 445,650.96
  4. Step 4: Simplify right side
    768,127.92x = 472,321,601,264.62
  5. Step 5: Solve for x
    x = 472,321,601,264.62/768,127.92
  6. Step 6: Final answer
    x = 614,899.67

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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.