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Finding the Fourth Proportional to 10,728.88, 14,806.76 and 6,013.60

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Solution

The fourth proportional to 10,728.88, 14,806.76 and 6,013.60 is: 8,299.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,728.88 : 14,806.76 = 6,013.60 : x
  2. Step 2: Convert to fraction form
    10,728.88/14,806.76 = 6,013.60/x
  3. Step 3: Cross multiply
    10,728.88x = 14,806.76 × 6,013.60
  4. Step 4: Simplify right side
    10,728.88x = 89,041,931.94
  5. Step 5: Solve for x
    x = 89,041,931.94/10,728.88
  6. Step 6: Final answer
    x = 8,299.28

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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.