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Finding the Fourth Proportional to 222,160.30, 306,630.30 and 153,346.30

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Solution

The fourth proportional to 222,160.30, 306,630.30 and 153,346.30 is: 211,651.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,160.30 : 306,630.30 = 153,346.30 : x
  2. Step 2: Convert to fraction form
    222,160.30/306,630.30 = 153,346.30/x
  3. Step 3: Cross multiply
    222,160.30x = 306,630.30 × 153,346.30
  4. Step 4: Simplify right side
    222,160.30x = 47,020,621,972.89
  5. Step 5: Solve for x
    x = 47,020,621,972.89/222,160.30
  6. Step 6: Final answer
    x = 211,651.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.