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Finding the Fourth Proportional to 316,063.80, 474,024.51 and 91,374.21

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Solution

The fourth proportional to 316,063.80, 474,024.51 and 91,374.21 is: 137,040.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,063.80 : 474,024.51 = 91,374.21 : x
  2. Step 2: Convert to fraction form
    316,063.80/474,024.51 = 91,374.21/x
  3. Step 3: Cross multiply
    316,063.80x = 474,024.51 × 91,374.21
  4. Step 4: Simplify right side
    316,063.80x = 43,313,615,121.89
  5. Step 5: Solve for x
    x = 43,313,615,121.89/316,063.80
  6. Step 6: Final answer
    x = 137,040.73

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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.