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Finding the Fourth Proportional to 15,746.76, 21,730.05 and 8,673.03

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Solution

The fourth proportional to 15,746.76, 21,730.05 and 8,673.03 is: 11,968.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,746.76 : 21,730.05 = 8,673.03 : x
  2. Step 2: Convert to fraction form
    15,746.76/21,730.05 = 8,673.03/x
  3. Step 3: Cross multiply
    15,746.76x = 21,730.05 × 8,673.03
  4. Step 4: Simplify right side
    15,746.76x = 188,465,375.55
  5. Step 5: Solve for x
    x = 188,465,375.55/15,746.76
  6. Step 6: Final answer
    x = 11,968.52

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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.