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Finding the Fourth Proportional to 30,674.62, 46,011.87 and 8,487.94

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Solution

The fourth proportional to 30,674.62, 46,011.87 and 8,487.94 is: 12,731.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,674.62 : 46,011.87 = 8,487.94 : x
  2. Step 2: Convert to fraction form
    30,674.62/46,011.87 = 8,487.94/x
  3. Step 3: Cross multiply
    30,674.62x = 46,011.87 × 8,487.94
  4. Step 4: Simplify right side
    30,674.62x = 390,545,761.79
  5. Step 5: Solve for x
    x = 390,545,761.79/30,674.62
  6. Step 6: Final answer
    x = 12,731.89

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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.