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Finding the Fourth Proportional to 267,145, 368,660.10 and 153,975.04

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Solution

The fourth proportional to 267,145, 368,660.10 and 153,975.04 is: 212,485.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,145 : 368,660.10 = 153,975.04 : x
  2. Step 2: Convert to fraction form
    267,145/368,660.10 = 153,975.04/x
  3. Step 3: Cross multiply
    267,145x = 368,660.10 × 153,975.04
  4. Step 4: Simplify right side
    267,145x = 56,764,453,643.90
  5. Step 5: Solve for x
    x = 56,764,453,643.90/267,145
  6. Step 6: Final answer
    x = 212,485.56

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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.