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Finding the Fourth Proportional to 9,894.76, 13,653.70 and 5,915.32

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Solution

The fourth proportional to 9,894.76, 13,653.70 and 5,915.32 is: 8,162.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,894.76 : 13,653.70 = 5,915.32 : x
  2. Step 2: Convert to fraction form
    9,894.76/13,653.70 = 5,915.32/x
  3. Step 3: Cross multiply
    9,894.76x = 13,653.70 × 5,915.32
  4. Step 4: Simplify right side
    9,894.76x = 80,766,004.68
  5. Step 5: Solve for x
    x = 80,766,004.68/9,894.76
  6. Step 6: Final answer
    x = 8,162.50

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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.