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Finding the Fourth Proportional to 719,661.58, 993,148.50 and 397,392.15

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Solution

The fourth proportional to 719,661.58, 993,148.50 and 397,392.15 is: 548,409.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,661.58 : 993,148.50 = 397,392.15 : x
  2. Step 2: Convert to fraction form
    719,661.58/993,148.50 = 397,392.15/x
  3. Step 3: Cross multiply
    719,661.58x = 993,148.50 × 397,392.15
  4. Step 4: Simplify right side
    719,661.58x = 394,669,417,684.28
  5. Step 5: Solve for x
    x = 394,669,417,684.28/719,661.58
  6. Step 6: Final answer
    x = 548,409.74

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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.