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Finding the Fourth Proportional to 319,458.66, 440,818.88 and 176,218.69

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Solution

The fourth proportional to 319,458.66, 440,818.88 and 176,218.69 is: 243,163.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,458.66 : 440,818.88 = 176,218.69 : x
  2. Step 2: Convert to fraction form
    319,458.66/440,818.88 = 176,218.69/x
  3. Step 3: Cross multiply
    319,458.66x = 440,818.88 × 176,218.69
  4. Step 4: Simplify right side
    319,458.66x = 77,680,525,891.11
  5. Step 5: Solve for x
    x = 77,680,525,891.11/319,458.66
  6. Step 6: Final answer
    x = 243,163.00

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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.