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Finding the Fourth Proportional to 75,411.91, 104,056.86 and 43,574.64

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Solution

The fourth proportional to 75,411.91, 104,056.86 and 43,574.64 is: 60,126.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,411.91 : 104,056.86 = 43,574.64 : x
  2. Step 2: Convert to fraction form
    75,411.91/104,056.86 = 43,574.64/x
  3. Step 3: Cross multiply
    75,411.91x = 104,056.86 × 43,574.64
  4. Step 4: Simplify right side
    75,411.91x = 4,534,240,214.03
  5. Step 5: Solve for x
    x = 4,534,240,214.03/75,411.91
  6. Step 6: Final answer
    x = 60,126.31

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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.