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Finding the Fourth Proportional to 7,718.79, 10,651.98 and 4,361.67

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Solution

The fourth proportional to 7,718.79, 10,651.98 and 4,361.67 is: 6,019.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,718.79 : 10,651.98 = 4,361.67 : x
  2. Step 2: Convert to fraction form
    7,718.79/10,651.98 = 4,361.67/x
  3. Step 3: Cross multiply
    7,718.79x = 10,651.98 × 4,361.67
  4. Step 4: Simplify right side
    7,718.79x = 46,460,421.61
  5. Step 5: Solve for x
    x = 46,460,421.61/7,718.79
  6. Step 6: Final answer
    x = 6,019.13

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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.