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Finding the Fourth Proportional to 172,963.20, 238,658.40 and 97,511.60

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Solution

The fourth proportional to 172,963.20, 238,658.40 and 97,511.60 is: 134,548.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,963.20 : 238,658.40 = 97,511.60 : x
  2. Step 2: Convert to fraction form
    172,963.20/238,658.40 = 97,511.60/x
  3. Step 3: Cross multiply
    172,963.20x = 238,658.40 × 97,511.60
  4. Step 4: Simplify right side
    172,963.20x = 23,271,962,437.44
  5. Step 5: Solve for x
    x = 23,271,962,437.44/172,963.20
  6. Step 6: Final answer
    x = 134,548.63

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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.