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Finding the Fourth Proportional to 349,771.40, 524,786.70 and 336,811.40

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Solution

The fourth proportional to 349,771.40, 524,786.70 and 336,811.40 is: 505,341.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,771.40 : 524,786.70 = 336,811.40 : x
  2. Step 2: Convert to fraction form
    349,771.40/524,786.70 = 336,811.40/x
  3. Step 3: Cross multiply
    349,771.40x = 524,786.70 × 336,811.40
  4. Step 4: Simplify right side
    349,771.40x = 176,754,143,128.38
  5. Step 5: Solve for x
    x = 176,754,143,128.38/349,771.40
  6. Step 6: Final answer
    x = 505,341.90

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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.