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Finding the Fourth Proportional to 91,636.49, 126,458.19 and 55,826.49

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Solution

The fourth proportional to 91,636.49, 126,458.19 and 55,826.49 is: 77,040.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,636.49 : 126,458.19 = 55,826.49 : x
  2. Step 2: Convert to fraction form
    91,636.49/126,458.19 = 55,826.49/x
  3. Step 3: Cross multiply
    91,636.49x = 126,458.19 × 55,826.49
  4. Step 4: Simplify right side
    91,636.49x = 7,059,716,841.00
  5. Step 5: Solve for x
    x = 7,059,716,841.00/91,636.49
  6. Step 6: Final answer
    x = 77,040.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.