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Finding the Fourth Proportional to 355,505.31, 533,205.54 and 130,813.56

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Solution

The fourth proportional to 355,505.31, 533,205.54 and 130,813.56 is: 196,201.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,505.31 : 533,205.54 = 130,813.56 : x
  2. Step 2: Convert to fraction form
    355,505.31/533,205.54 = 130,813.56/x
  3. Step 3: Cross multiply
    355,505.31x = 533,205.54 × 130,813.56
  4. Step 4: Simplify right side
    355,505.31x = 69,750,514,899.12
  5. Step 5: Solve for x
    x = 69,750,514,899.12/355,505.31
  6. Step 6: Final answer
    x = 196,201.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.