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Finding the Fourth Proportional to 279,114.28, 385,174.08 and 151,787.14

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Solution

The fourth proportional to 279,114.28, 385,174.08 and 151,787.14 is: 209,464.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,114.28 : 385,174.08 = 151,787.14 : x
  2. Step 2: Convert to fraction form
    279,114.28/385,174.08 = 151,787.14/x
  3. Step 3: Cross multiply
    279,114.28x = 385,174.08 × 151,787.14
  4. Step 4: Simplify right side
    279,114.28x = 58,464,472,005.33
  5. Step 5: Solve for x
    x = 58,464,472,005.33/279,114.28
  6. Step 6: Final answer
    x = 209,464.28

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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.