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Finding the Fourth Proportional to 639,803.71, 882,923.59 and 353,317.65

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Solution

The fourth proportional to 639,803.71, 882,923.59 and 353,317.65 is: 487,575.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,803.71 : 882,923.59 = 353,317.65 : x
  2. Step 2: Convert to fraction form
    639,803.71/882,923.59 = 353,317.65/x
  3. Step 3: Cross multiply
    639,803.71x = 882,923.59 × 353,317.65
  4. Step 4: Simplify right side
    639,803.71x = 311,952,485,079.05
  5. Step 5: Solve for x
    x = 311,952,485,079.05/639,803.71
  6. Step 6: Final answer
    x = 487,575.30

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.