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Finding the Fourth Proportional to 7,492.62, 10,339.80 and 4,135.32

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Solution

The fourth proportional to 7,492.62, 10,339.80 and 4,135.32 is: 5,706.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,492.62 : 10,339.80 = 4,135.32 : x
  2. Step 2: Convert to fraction form
    7,492.62/10,339.80 = 4,135.32/x
  3. Step 3: Cross multiply
    7,492.62x = 10,339.80 × 4,135.32
  4. Step 4: Simplify right side
    7,492.62x = 42,758,381.74
  5. Step 5: Solve for x
    x = 42,758,381.74/7,492.62
  6. Step 6: Final answer
    x = 5,706.73

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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.