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Finding the Fourth Proportional to 278,954.64, 384,955.20 and 151,626.96

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Solution

The fourth proportional to 278,954.64, 384,955.20 and 151,626.96 is: 209,244.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,954.64 : 384,955.20 = 151,626.96 : x
  2. Step 2: Convert to fraction form
    278,954.64/384,955.20 = 151,626.96/x
  3. Step 3: Cross multiply
    278,954.64x = 384,955.20 × 151,626.96
  4. Step 4: Simplify right side
    278,954.64x = 58,369,586,712.19
  5. Step 5: Solve for x
    x = 58,369,586,712.19/278,954.64
  6. Step 6: Final answer
    x = 209,244.01

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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.