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Finding the Fourth Proportional to 645,096.66, 888,920.50 and 499,014.97

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Solution

The fourth proportional to 645,096.66, 888,920.50 and 499,014.97 is: 687,625.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,096.66 : 888,920.50 = 499,014.97 : x
  2. Step 2: Convert to fraction form
    645,096.66/888,920.50 = 499,014.97/x
  3. Step 3: Cross multiply
    645,096.66x = 888,920.50 × 499,014.97
  4. Step 4: Simplify right side
    645,096.66x = 443,584,634,259.14
  5. Step 5: Solve for x
    x = 443,584,634,259.14/645,096.66
  6. Step 6: Final answer
    x = 687,625.07

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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.