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Finding the Fourth Proportional to 719,608.56, 993,075.29 and 397,339.02

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Solution

The fourth proportional to 719,608.56, 993,075.29 and 397,339.02 is: 548,336.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,608.56 : 993,075.29 = 397,339.02 : x
  2. Step 2: Convert to fraction form
    719,608.56/993,075.29 = 397,339.02/x
  3. Step 3: Cross multiply
    719,608.56x = 993,075.29 × 397,339.02
  4. Step 4: Simplify right side
    719,608.56x = 394,587,562,018.14
  5. Step 5: Solve for x
    x = 394,587,562,018.14/719,608.56
  6. Step 6: Final answer
    x = 548,336.40

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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.