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Finding the Fourth Proportional to 5,185.95, 7,806.95 and 4,726.68

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Solution

The fourth proportional to 5,185.95, 7,806.95 and 4,726.68 is: 7,115.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,185.95 : 7,806.95 = 4,726.68 : x
  2. Step 2: Convert to fraction form
    5,185.95/7,806.95 = 4,726.68/x
  3. Step 3: Cross multiply
    5,185.95x = 7,806.95 × 4,726.68
  4. Step 4: Simplify right side
    5,185.95x = 36,900,966.24
  5. Step 5: Solve for x
    x = 36,900,966.24/5,185.95
  6. Step 6: Final answer
    x = 7,115.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.