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Finding the Fourth Proportional to 10,792.36, 14,878.50 and 8,394.88

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Solution

The fourth proportional to 10,792.36, 14,878.50 and 8,394.88 is: 11,573.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,792.36 : 14,878.50 = 8,394.88 : x
  2. Step 2: Convert to fraction form
    10,792.36/14,878.50 = 8,394.88/x
  3. Step 3: Cross multiply
    10,792.36x = 14,878.50 × 8,394.88
  4. Step 4: Simplify right side
    10,792.36x = 124,903,222.08
  5. Step 5: Solve for x
    x = 124,903,222.08/10,792.36
  6. Step 6: Final answer
    x = 11,573.30

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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.