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Finding the Fourth Proportional to 319,275.63, 440,620.22 and 176,035.46

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Solution

The fourth proportional to 319,275.63, 440,620.22 and 176,035.46 is: 242,939.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,275.63 : 440,620.22 = 176,035.46 : x
  2. Step 2: Convert to fraction form
    319,275.63/440,620.22 = 176,035.46/x
  3. Step 3: Cross multiply
    319,275.63x = 440,620.22 × 176,035.46
  4. Step 4: Simplify right side
    319,275.63x = 77,564,781,349.99
  5. Step 5: Solve for x
    x = 77,564,781,349.99/319,275.63
  6. Step 6: Final answer
    x = 242,939.87

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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.