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Finding the Fourth Proportional to 273,130.80, 409,312.20 and 217,066.80

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Solution

The fourth proportional to 273,130.80, 409,312.20 and 217,066.80 is: 325,295.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,130.80 : 409,312.20 = 217,066.80 : x
  2. Step 2: Convert to fraction form
    273,130.80/409,312.20 = 217,066.80/x
  3. Step 3: Cross multiply
    273,130.80x = 409,312.20 × 217,066.80
  4. Step 4: Simplify right side
    273,130.80x = 88,848,089,454.96
  5. Step 5: Solve for x
    x = 88,848,089,454.96/273,130.80
  6. Step 6: Final answer
    x = 325,295.02

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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.