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Finding the Fourth Proportional to 216,699.68, 299,077.44 and 131,800.34

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Solution

The fourth proportional to 216,699.68, 299,077.44 and 131,800.34 is: 181,903.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,699.68 : 299,077.44 = 131,800.34 : x
  2. Step 2: Convert to fraction form
    216,699.68/299,077.44 = 131,800.34/x
  3. Step 3: Cross multiply
    216,699.68x = 299,077.44 × 131,800.34
  4. Step 4: Simplify right side
    216,699.68x = 39,418,508,278.33
  5. Step 5: Solve for x
    x = 39,418,508,278.33/216,699.68
  6. Step 6: Final answer
    x = 181,903.86

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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.