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Finding the Fourth Proportional to 75,322.48, 103,940.54 and 43,060.60

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Solution

The fourth proportional to 75,322.48, 103,940.54 and 43,060.60 is: 59,421.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,322.48 : 103,940.54 = 43,060.60 : x
  2. Step 2: Convert to fraction form
    75,322.48/103,940.54 = 43,060.60/x
  3. Step 3: Cross multiply
    75,322.48x = 103,940.54 × 43,060.60
  4. Step 4: Simplify right side
    75,322.48x = 4,475,742,016.72
  5. Step 5: Solve for x
    x = 4,475,742,016.72/75,322.48
  6. Step 6: Final answer
    x = 59,421.07

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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.