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Finding the Fourth Proportional to 52,278.44, 78,416.94 and 12,835.40

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Solution

The fourth proportional to 52,278.44, 78,416.94 and 12,835.40 is: 19,252.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,278.44 : 78,416.94 = 12,835.40 : x
  2. Step 2: Convert to fraction form
    52,278.44/78,416.94 = 12,835.40/x
  3. Step 3: Cross multiply
    52,278.44x = 78,416.94 × 12,835.40
  4. Step 4: Simplify right side
    52,278.44x = 1,006,512,791.68
  5. Step 5: Solve for x
    x = 1,006,512,791.68/52,278.44
  6. Step 6: Final answer
    x = 19,252.92

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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.