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Finding the Fourth Proportional to 458,472,247.80, 687,708,371.70 and 408,307,716.60

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Solution

The fourth proportional to 458,472,247.80, 687,708,371.70 and 408,307,716.60 is: 612,461,574.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,472,247.80 : 687,708,371.70 = 408,307,716.60 : x
  2. Step 2: Convert to fraction form
    458,472,247.80/687,708,371.70 = 408,307,716.60/x
  3. Step 3: Cross multiply
    458,472,247.80x = 687,708,371.70 × 408,307,716.60
  4. Step 4: Simplify right side
    458,472,247.80x = 280,796,634,935,531,104
  5. Step 5: Solve for x
    x = 280,796,634,935,531,104/458,472,247.80
  6. Step 6: Final answer
    x = 612,461,574.90

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.