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Finding the Fourth Proportional to 202,938.99, 304,410.54 and 90,624.93

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Solution

The fourth proportional to 202,938.99, 304,410.54 and 90,624.93 is: 135,938.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,938.99 : 304,410.54 = 90,624.93 : x
  2. Step 2: Convert to fraction form
    202,938.99/304,410.54 = 90,624.93/x
  3. Step 3: Cross multiply
    202,938.99x = 304,410.54 × 90,624.93
  4. Step 4: Simplify right side
    202,938.99x = 27,587,183,878.76
  5. Step 5: Solve for x
    x = 27,587,183,878.76/202,938.99
  6. Step 6: Final answer
    x = 135,938.31

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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.