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Finding the Fourth Proportional to 257,045.52, 355,210.79 and 193,272.60

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Solution

The fourth proportional to 257,045.52, 355,210.79 and 193,272.60 is: 267,083.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,045.52 : 355,210.79 = 193,272.60 : x
  2. Step 2: Convert to fraction form
    257,045.52/355,210.79 = 193,272.60/x
  3. Step 3: Cross multiply
    257,045.52x = 355,210.79 × 193,272.60
  4. Step 4: Simplify right side
    257,045.52x = 68,652,511,964.99
  5. Step 5: Solve for x
    x = 68,652,511,964.99/257,045.52
  6. Step 6: Final answer
    x = 267,083.09

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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.