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Finding the Fourth Proportional to 7,492.88, 10,339.72 and 4,135.44

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Solution

The fourth proportional to 7,492.88, 10,339.72 and 4,135.44 is: 5,706.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,492.88 : 10,339.72 = 4,135.44 : x
  2. Step 2: Convert to fraction form
    7,492.88/10,339.72 = 4,135.44/x
  3. Step 3: Cross multiply
    7,492.88x = 10,339.72 × 4,135.44
  4. Step 4: Simplify right side
    7,492.88x = 42,759,291.68
  5. Step 5: Solve for x
    x = 42,759,291.68/7,492.88
  6. Step 6: Final answer
    x = 5,706.66

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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.