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Finding the Fourth Proportional to 611,342.40, 917,704.80 and 362,164.80

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Solution

The fourth proportional to 611,342.40, 917,704.80 and 362,164.80 is: 543,656.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,342.40 : 917,704.80 = 362,164.80 : x
  2. Step 2: Convert to fraction form
    611,342.40/917,704.80 = 362,164.80/x
  3. Step 3: Cross multiply
    611,342.40x = 917,704.80 × 362,164.80
  4. Step 4: Simplify right side
    611,342.40x = 332,360,375,351.04
  5. Step 5: Solve for x
    x = 332,360,375,351.04/611,342.40
  6. Step 6: Final answer
    x = 543,656.67

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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.