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Finding the Fourth Proportional to 228,907.70, 343,361.55 and 71,152.10

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Solution

The fourth proportional to 228,907.70, 343,361.55 and 71,152.10 is: 106,728.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,907.70 : 343,361.55 = 71,152.10 : x
  2. Step 2: Convert to fraction form
    228,907.70/343,361.55 = 71,152.10/x
  3. Step 3: Cross multiply
    228,907.70x = 343,361.55 × 71,152.10
  4. Step 4: Simplify right side
    228,907.70x = 24,430,895,341.76
  5. Step 5: Solve for x
    x = 24,430,895,341.76/228,907.70
  6. Step 6: Final answer
    x = 106,728.15

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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.