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Finding the Fourth Proportional to 398,895.98, 597,838.52 and 394,677.50

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Solution

The fourth proportional to 398,895.98, 597,838.52 and 394,677.50 is: 591,516.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,895.98 : 597,838.52 = 394,677.50 : x
  2. Step 2: Convert to fraction form
    398,895.98/597,838.52 = 394,677.50/x
  3. Step 3: Cross multiply
    398,895.98x = 597,838.52 × 394,677.50
  4. Step 4: Simplify right side
    398,895.98x = 235,953,412,477.30
  5. Step 5: Solve for x
    x = 235,953,412,477.30/398,895.98
  6. Step 6: Final answer
    x = 591,516.15

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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.