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Finding the Fourth Proportional to 665,072.28, 997,756.02 and 191,720.70

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Solution

The fourth proportional to 665,072.28, 997,756.02 and 191,720.70 is: 287,623.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,072.28 : 997,756.02 = 191,720.70 : x
  2. Step 2: Convert to fraction form
    665,072.28/997,756.02 = 191,720.70/x
  3. Step 3: Cross multiply
    665,072.28x = 997,756.02 × 191,720.70
  4. Step 4: Simplify right side
    665,072.28x = 191,290,482,583.61
  5. Step 5: Solve for x
    x = 191,290,482,583.61/665,072.28
  6. Step 6: Final answer
    x = 287,623.60

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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.