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Finding the Fourth Proportional to 38,992.62, 58,488.86 and 12,697.32

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Solution

The fourth proportional to 38,992.62, 58,488.86 and 12,697.32 is: 19,045.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,992.62 : 58,488.86 = 12,697.32 : x
  2. Step 2: Convert to fraction form
    38,992.62/58,488.86 = 12,697.32/x
  3. Step 3: Cross multiply
    38,992.62x = 58,488.86 × 12,697.32
  4. Step 4: Simplify right side
    38,992.62x = 742,651,771.86
  5. Step 5: Solve for x
    x = 742,651,771.86/38,992.62
  6. Step 6: Final answer
    x = 19,045.96

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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.