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Finding the Fourth Proportional to 719,663.06, 993,128.61 and 397,366.22

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Solution

The fourth proportional to 719,663.06, 993,128.61 and 397,366.22 is: 548,361.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,663.06 : 993,128.61 = 397,366.22 : x
  2. Step 2: Convert to fraction form
    719,663.06/993,128.61 = 397,366.22/x
  3. Step 3: Cross multiply
    719,663.06x = 993,128.61 × 397,366.22
  4. Step 4: Simplify right side
    719,663.06x = 394,635,761,729.55
  5. Step 5: Solve for x
    x = 394,635,761,729.55/719,663.06
  6. Step 6: Final answer
    x = 548,361.84

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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.