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Finding the Fourth Proportional to 202,991.67, 304,507.96 and 69,854.40

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Solution

The fourth proportional to 202,991.67, 304,507.96 and 69,854.40 is: 104,788.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,991.67 : 304,507.96 = 69,854.40 : x
  2. Step 2: Convert to fraction form
    202,991.67/304,507.96 = 69,854.40/x
  3. Step 3: Cross multiply
    202,991.67x = 304,507.96 × 69,854.40
  4. Step 4: Simplify right side
    202,991.67x = 21,271,220,666.39
  5. Step 5: Solve for x
    x = 21,271,220,666.39/202,991.67
  6. Step 6: Final answer
    x = 104,788.64

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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.