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Finding the Fourth Proportional to 7,980.17, 11,951.08 and 4,461.53

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Solution

The fourth proportional to 7,980.17, 11,951.08 and 4,461.53 is: 6,681.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,980.17 : 11,951.08 = 4,461.53 : x
  2. Step 2: Convert to fraction form
    7,980.17/11,951.08 = 4,461.53/x
  3. Step 3: Cross multiply
    7,980.17x = 11,951.08 × 4,461.53
  4. Step 4: Simplify right side
    7,980.17x = 53,320,031.04
  5. Step 5: Solve for x
    x = 53,320,031.04/7,980.17
  6. Step 6: Final answer
    x = 6,681.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.