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Finding the Fourth Proportional to 279,059.68, 385,100.40 and 151,735.36

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Solution

The fourth proportional to 279,059.68, 385,100.40 and 151,735.36 is: 209,393.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,059.68 : 385,100.40 = 151,735.36 : x
  2. Step 2: Convert to fraction form
    279,059.68/385,100.40 = 151,735.36/x
  3. Step 3: Cross multiply
    279,059.68x = 385,100.40 × 151,735.36
  4. Step 4: Simplify right side
    279,059.68x = 58,433,347,830.14
  5. Step 5: Solve for x
    x = 58,433,347,830.14/279,059.68
  6. Step 6: Final answer
    x = 209,393.73

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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.