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Finding the Fourth Proportional to 28,594.42, 42,908.43 and 11,953.17

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Solution

The fourth proportional to 28,594.42, 42,908.43 and 11,953.17 is: 17,936.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,594.42 : 42,908.43 = 11,953.17 : x
  2. Step 2: Convert to fraction form
    28,594.42/42,908.43 = 11,953.17/x
  3. Step 3: Cross multiply
    28,594.42x = 42,908.43 × 11,953.17
  4. Step 4: Simplify right side
    28,594.42x = 512,891,803.05
  5. Step 5: Solve for x
    x = 512,891,803.05/28,594.42
  6. Step 6: Final answer
    x = 17,936.78

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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.