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Finding the Fourth Proportional to 21,865.23, 32,800.05 and 9,386.55

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Solution

The fourth proportional to 21,865.23, 32,800.05 and 9,386.55 is: 14,080.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,865.23 : 32,800.05 = 9,386.55 : x
  2. Step 2: Convert to fraction form
    21,865.23/32,800.05 = 9,386.55/x
  3. Step 3: Cross multiply
    21,865.23x = 32,800.05 × 9,386.55
  4. Step 4: Simplify right side
    21,865.23x = 307,879,309.33
  5. Step 5: Solve for x
    x = 307,879,309.33/21,865.23
  6. Step 6: Final answer
    x = 14,080.77

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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.