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Finding the Fourth Proportional to 75,409.79, 104,053.92 and 43,572.53

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Solution

The fourth proportional to 75,409.79, 104,053.92 and 43,572.53 is: 60,123.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,409.79 : 104,053.92 = 43,572.53 : x
  2. Step 2: Convert to fraction form
    75,409.79/104,053.92 = 43,572.53/x
  3. Step 3: Cross multiply
    75,409.79x = 104,053.92 × 43,572.53
  4. Step 4: Simplify right side
    75,409.79x = 4,533,892,647.56
  5. Step 5: Solve for x
    x = 4,533,892,647.56/75,409.79
  6. Step 6: Final answer
    x = 60,123.40

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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.