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Finding the Fourth Proportional to 100,998.34, 139,406.97 and 58,566.34

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Solution

The fourth proportional to 100,998.34, 139,406.97 and 58,566.34 is: 80,838.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,998.34 : 139,406.97 = 58,566.34 : x
  2. Step 2: Convert to fraction form
    100,998.34/139,406.97 = 58,566.34/x
  3. Step 3: Cross multiply
    100,998.34x = 139,406.97 × 58,566.34
  4. Step 4: Simplify right side
    100,998.34x = 8,164,556,003.39
  5. Step 5: Solve for x
    x = 8,164,556,003.39/100,998.34
  6. Step 6: Final answer
    x = 80,838.52

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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.