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Finding the Fourth Proportional to 698,006.72, 963,299.04 and 396,220.16

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Solution

The fourth proportional to 698,006.72, 963,299.04 and 396,220.16 is: 546,812.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,006.72 : 963,299.04 = 396,220.16 : x
  2. Step 2: Convert to fraction form
    698,006.72/963,299.04 = 396,220.16/x
  3. Step 3: Cross multiply
    698,006.72x = 963,299.04 × 396,220.16
  4. Step 4: Simplify right side
    698,006.72x = 381,678,499,756.65
  5. Step 5: Solve for x
    x = 381,678,499,756.65/698,006.72
  6. Step 6: Final answer
    x = 546,812.07

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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.