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Finding the Fourth Proportional to 10,862.63, 14,990.42 and 5,894.63

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Solution

The fourth proportional to 10,862.63, 14,990.42 and 5,894.63 is: 8,134.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,862.63 : 14,990.42 = 5,894.63 : x
  2. Step 2: Convert to fraction form
    10,862.63/14,990.42 = 5,894.63/x
  3. Step 3: Cross multiply
    10,862.63x = 14,990.42 × 5,894.63
  4. Step 4: Simplify right side
    10,862.63x = 88,362,979.44
  5. Step 5: Solve for x
    x = 88,362,979.44/10,862.63
  6. Step 6: Final answer
    x = 8,134.58

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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.