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Finding the Fourth Proportional to 357,631.69, 536,447.79 and 91,392.46

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Solution

The fourth proportional to 357,631.69, 536,447.79 and 91,392.46 is: 137,088.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,631.69 : 536,447.79 = 91,392.46 : x
  2. Step 2: Convert to fraction form
    357,631.69/536,447.79 = 91,392.46/x
  3. Step 3: Cross multiply
    357,631.69x = 536,447.79 × 91,392.46
  4. Step 4: Simplify right side
    357,631.69x = 49,027,283,189.66
  5. Step 5: Solve for x
    x = 49,027,283,189.66/357,631.69
  6. Step 6: Final answer
    x = 137,088.76

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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.