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Finding the Fourth Proportional to 9,772.16, 13,492.80 and 7,672.64

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Solution

The fourth proportional to 9,772.16, 13,492.80 and 7,672.64 is: 10,593.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,772.16 : 13,492.80 = 7,672.64 : x
  2. Step 2: Convert to fraction form
    9,772.16/13,492.80 = 7,672.64/x
  3. Step 3: Cross multiply
    9,772.16x = 13,492.80 × 7,672.64
  4. Step 4: Simplify right side
    9,772.16x = 103,525,396.99
  5. Step 5: Solve for x
    x = 103,525,396.99/9,772.16
  6. Step 6: Final answer
    x = 10,593.91

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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.