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Finding the Fourth Proportional to 618,340.40, 926,198.40 and 513,364.40

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Solution

The fourth proportional to 618,340.40, 926,198.40 and 513,364.40 is: 768,957.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,340.40 : 926,198.40 = 513,364.40 : x
  2. Step 2: Convert to fraction form
    618,340.40/926,198.40 = 513,364.40/x
  3. Step 3: Cross multiply
    618,340.40x = 926,198.40 × 513,364.40
  4. Step 4: Simplify right side
    618,340.40x = 475,477,285,896.96
  5. Step 5: Solve for x
    x = 475,477,285,896.96/618,340.40
  6. Step 6: Final answer
    x = 768,957.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.