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Finding the Fourth Proportional to 719,601.65, 993,065.77 and 397,332.15

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Solution

The fourth proportional to 719,601.65, 993,065.77 and 397,332.15 is: 548,326.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,601.65 : 993,065.77 = 397,332.15 : x
  2. Step 2: Convert to fraction form
    719,601.65/993,065.77 = 397,332.15/x
  3. Step 3: Cross multiply
    719,601.65x = 993,065.77 × 397,332.15
  4. Step 4: Simplify right side
    719,601.65x = 394,576,957,485.51
  5. Step 5: Solve for x
    x = 394,576,957,485.51/719,601.65
  6. Step 6: Final answer
    x = 548,326.92

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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.