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Finding the Fourth Proportional to 79,780.94, 110,095.54 and 43,970.94

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Solution

The fourth proportional to 79,780.94, 110,095.54 and 43,970.94 is: 60,678.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,780.94 : 110,095.54 = 43,970.94 : x
  2. Step 2: Convert to fraction form
    79,780.94/110,095.54 = 43,970.94/x
  3. Step 3: Cross multiply
    79,780.94x = 110,095.54 × 43,970.94
  4. Step 4: Simplify right side
    79,780.94x = 4,841,004,383.61
  5. Step 5: Solve for x
    x = 4,841,004,383.61/79,780.94
  6. Step 6: Final answer
    x = 60,678.71

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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.