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Finding the Fourth Proportional to 15,903.96, 21,946.73 and 8,830.83

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Solution

The fourth proportional to 15,903.96, 21,946.73 and 8,830.83 is: 12,186.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,903.96 : 21,946.73 = 8,830.83 : x
  2. Step 2: Convert to fraction form
    15,903.96/21,946.73 = 8,830.83/x
  3. Step 3: Cross multiply
    15,903.96x = 21,946.73 × 8,830.83
  4. Step 4: Simplify right side
    15,903.96x = 193,807,879.83
  5. Step 5: Solve for x
    x = 193,807,879.83/15,903.96
  6. Step 6: Final answer
    x = 12,186.14

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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.