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Finding the Fourth Proportional to 125,794.52, 173,621.25 and 72,115.58

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Solution

The fourth proportional to 125,794.52, 173,621.25 and 72,115.58 is: 99,533.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,794.52 : 173,621.25 = 72,115.58 : x
  2. Step 2: Convert to fraction form
    125,794.52/173,621.25 = 72,115.58/x
  3. Step 3: Cross multiply
    125,794.52x = 173,621.25 × 72,115.58
  4. Step 4: Simplify right side
    125,794.52x = 12,520,797,144.08
  5. Step 5: Solve for x
    x = 12,520,797,144.08/125,794.52
  6. Step 6: Final answer
    x = 99,533.72

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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.