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Finding the Fourth Proportional to 98,991.52, 136,609.23 and 53,669.38

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Solution

The fourth proportional to 98,991.52, 136,609.23 and 53,669.38 is: 74,064.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,991.52 : 136,609.23 = 53,669.38 : x
  2. Step 2: Convert to fraction form
    98,991.52/136,609.23 = 53,669.38/x
  3. Step 3: Cross multiply
    98,991.52x = 136,609.23 × 53,669.38
  4. Step 4: Simplify right side
    98,991.52x = 7,331,732,676.38
  5. Step 5: Solve for x
    x = 7,331,732,676.38/98,991.52
  6. Step 6: Final answer
    x = 74,064.25

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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.