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Finding the Fourth Proportional to 28,608.84, 42,902.73 and 9,884.07

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Solution

The fourth proportional to 28,608.84, 42,902.73 and 9,884.07 is: 14,822.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,608.84 : 42,902.73 = 9,884.07 : x
  2. Step 2: Convert to fraction form
    28,608.84/42,902.73 = 9,884.07/x
  3. Step 3: Cross multiply
    28,608.84x = 42,902.73 × 9,884.07
  4. Step 4: Simplify right side
    28,608.84x = 424,053,586.51
  5. Step 5: Solve for x
    x = 424,053,586.51/28,608.84
  6. Step 6: Final answer
    x = 14,822.47

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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.