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Finding the Fourth Proportional to 319,485.01, 440,882.21 and 176,245.01

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Solution

The fourth proportional to 319,485.01, 440,882.21 and 176,245.01 is: 243,214.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,485.01 : 440,882.21 = 176,245.01 : x
  2. Step 2: Convert to fraction form
    319,485.01/440,882.21 = 176,245.01/x
  3. Step 3: Cross multiply
    319,485.01x = 440,882.21 × 176,245.01
  4. Step 4: Simplify right side
    319,485.01x = 77,703,289,510.27
  5. Step 5: Solve for x
    x = 77,703,289,510.27/319,485.01
  6. Step 6: Final answer
    x = 243,214.19

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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.