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Finding the Fourth Proportional to 258,509.02, 356,775.69 and 145,353.64

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Solution

The fourth proportional to 258,509.02, 356,775.69 and 145,353.64 is: 200,606.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,509.02 : 356,775.69 = 145,353.64 : x
  2. Step 2: Convert to fraction form
    258,509.02/356,775.69 = 145,353.64/x
  3. Step 3: Cross multiply
    258,509.02x = 356,775.69 × 145,353.64
  4. Step 4: Simplify right side
    258,509.02x = 51,858,645,205.01
  5. Step 5: Solve for x
    x = 51,858,645,205.01/258,509.02
  6. Step 6: Final answer
    x = 200,606.71

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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.