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Finding the Fourth Proportional to 12,398.63, 18,597.94 and 3,164.63

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Solution

The fourth proportional to 12,398.63, 18,597.94 and 3,164.63 is: 4,746.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,398.63 : 18,597.94 = 3,164.63 : x
  2. Step 2: Convert to fraction form
    12,398.63/18,597.94 = 3,164.63/x
  3. Step 3: Cross multiply
    12,398.63x = 18,597.94 × 3,164.63
  4. Step 4: Simplify right side
    12,398.63x = 58,855,598.86
  5. Step 5: Solve for x
    x = 58,855,598.86/12,398.63
  6. Step 6: Final answer
    x = 4,746.94

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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.