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Finding the Fourth Proportional to 641,713.81, 961,186.89 and 603,984.87

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Solution

The fourth proportional to 641,713.81, 961,186.89 and 603,984.87 is: 904,674.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,713.81 : 961,186.89 = 603,984.87 : x
  2. Step 2: Convert to fraction form
    641,713.81/961,186.89 = 603,984.87/x
  3. Step 3: Cross multiply
    641,713.81x = 961,186.89 × 603,984.87
  4. Step 4: Simplify right side
    641,713.81x = 580,542,336,916.42
  5. Step 5: Solve for x
    x = 580,542,336,916.42/641,713.81
  6. Step 6: Final answer
    x = 904,674.84

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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.