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Finding the Fourth Proportional to 10,787.94, 14,886.09 and 6,071.94

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Solution

The fourth proportional to 10,787.94, 14,886.09 and 6,071.94 is: 8,378.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,787.94 : 14,886.09 = 6,071.94 : x
  2. Step 2: Convert to fraction form
    10,787.94/14,886.09 = 6,071.94/x
  3. Step 3: Cross multiply
    10,787.94x = 14,886.09 × 6,071.94
  4. Step 4: Simplify right side
    10,787.94x = 90,387,445.31
  5. Step 5: Solve for x
    x = 90,387,445.31/10,787.94
  6. Step 6: Final answer
    x = 8,378.56

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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.