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Finding the Fourth Proportional to 573,692.40, 858,983.40 and 449,276.40

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Solution

The fourth proportional to 573,692.40, 858,983.40 and 449,276.40 is: 672,696.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,692.40 : 858,983.40 = 449,276.40 : x
  2. Step 2: Convert to fraction form
    573,692.40/858,983.40 = 449,276.40/x
  3. Step 3: Cross multiply
    573,692.40x = 858,983.40 × 449,276.40
  4. Step 4: Simplify right side
    573,692.40x = 385,920,969,611.76
  5. Step 5: Solve for x
    x = 385,920,969,611.76/573,692.40
  6. Step 6: Final answer
    x = 672,696.67

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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.