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Finding the Fourth Proportional to 372,042.09, 558,063.14 and 91,559.34

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Solution

The fourth proportional to 372,042.09, 558,063.14 and 91,559.34 is: 137,339.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,042.09 : 558,063.14 = 91,559.34 : x
  2. Step 2: Convert to fraction form
    372,042.09/558,063.14 = 91,559.34/x
  3. Step 3: Cross multiply
    372,042.09x = 558,063.14 × 91,559.34
  4. Step 4: Simplify right side
    372,042.09x = 51,095,892,318.93
  5. Step 5: Solve for x
    x = 51,095,892,318.93/372,042.09
  6. Step 6: Final answer
    x = 137,339.01

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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.