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Finding the Fourth Proportional to 51,348.70, 70,856.67 and 28,684.63

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Solution

The fourth proportional to 51,348.70, 70,856.67 and 28,684.63 is: 39,582.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,348.70 : 70,856.67 = 28,684.63 : x
  2. Step 2: Convert to fraction form
    51,348.70/70,856.67 = 28,684.63/x
  3. Step 3: Cross multiply
    51,348.70x = 70,856.67 × 28,684.63
  4. Step 4: Simplify right side
    51,348.70x = 2,032,497,361.98
  5. Step 5: Solve for x
    x = 2,032,497,361.98/51,348.70
  6. Step 6: Final answer
    x = 39,582.26

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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.