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Finding the Fourth Proportional to 51,109.79, 70,524.84 and 28,449.74

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Solution

The fourth proportional to 51,109.79, 70,524.84 and 28,449.74 is: 39,256.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,109.79 : 70,524.84 = 28,449.74 : x
  2. Step 2: Convert to fraction form
    51,109.79/70,524.84 = 28,449.74/x
  3. Step 3: Cross multiply
    51,109.79x = 70,524.84 × 28,449.74
  4. Step 4: Simplify right side
    51,109.79x = 2,006,413,326.17
  5. Step 5: Solve for x
    x = 2,006,413,326.17/51,109.79
  6. Step 6: Final answer
    x = 39,256.92

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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.