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Finding the Fourth Proportional to 7,055.17, 9,780.71 and 6,680.67

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Solution

The fourth proportional to 7,055.17, 9,780.71 and 6,680.67 is: 9,261.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,055.17 : 9,780.71 = 6,680.67 : x
  2. Step 2: Convert to fraction form
    7,055.17/9,780.71 = 6,680.67/x
  3. Step 3: Cross multiply
    7,055.17x = 9,780.71 × 6,680.67
  4. Step 4: Simplify right side
    7,055.17x = 65,341,695.88
  5. Step 5: Solve for x
    x = 65,341,695.88/7,055.17
  6. Step 6: Final answer
    x = 9,261.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.