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Finding the Fourth Proportional to 316,471.60, 474,936.09 and 124,374.61

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Solution

The fourth proportional to 316,471.60, 474,936.09 and 124,374.61 is: 186,651.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,471.60 : 474,936.09 = 124,374.61 : x
  2. Step 2: Convert to fraction form
    316,471.60/474,936.09 = 124,374.61/x
  3. Step 3: Cross multiply
    316,471.60x = 474,936.09 × 124,374.61
  4. Step 4: Simplify right side
    316,471.60x = 59,069,990,968.67
  5. Step 5: Solve for x
    x = 59,069,990,968.67/316,471.60
  6. Step 6: Final answer
    x = 186,651.79

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Why These Related Problems?

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