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Finding the Fourth Proportional to 59,340.44, 81,978.81 and 38,970.83

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Solution

The fourth proportional to 59,340.44, 81,978.81 and 38,970.83 is: 53,838.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,340.44 : 81,978.81 = 38,970.83 : x
  2. Step 2: Convert to fraction form
    59,340.44/81,978.81 = 38,970.83/x
  3. Step 3: Cross multiply
    59,340.44x = 81,978.81 × 38,970.83
  4. Step 4: Simplify right side
    59,340.44x = 3,194,782,268.11
  5. Step 5: Solve for x
    x = 3,194,782,268.11/59,340.44
  6. Step 6: Final answer
    x = 53,838.20

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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.