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Finding the Fourth Proportional to 19,178.94, 26,475.12 and 12,894.96

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Solution

The fourth proportional to 19,178.94, 26,475.12 and 12,894.96 is: 17,800.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,178.94 : 26,475.12 = 12,894.96 : x
  2. Step 2: Convert to fraction form
    19,178.94/26,475.12 = 12,894.96/x
  3. Step 3: Cross multiply
    19,178.94x = 26,475.12 × 12,894.96
  4. Step 4: Simplify right side
    19,178.94x = 341,395,613.40
  5. Step 5: Solve for x
    x = 341,395,613.40/19,178.94
  6. Step 6: Final answer
    x = 17,800.55

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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.