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Finding the Fourth Proportional to 310,782.08, 428,874.92 and 174,816.03

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Solution

The fourth proportional to 310,782.08, 428,874.92 and 174,816.03 is: 241,243.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,782.08 : 428,874.92 = 174,816.03 : x
  2. Step 2: Convert to fraction form
    310,782.08/428,874.92 = 174,816.03/x
  3. Step 3: Cross multiply
    310,782.08x = 428,874.92 × 174,816.03
  4. Step 4: Simplify right side
    310,782.08x = 74,974,210,006.89
  5. Step 5: Solve for x
    x = 74,974,210,006.89/310,782.08
  6. Step 6: Final answer
    x = 241,243.68

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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.