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Finding the Fourth Proportional to 58,419.69, 80,619.06 and 31,562.11

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Solution

The fourth proportional to 58,419.69, 80,619.06 and 31,562.11 is: 43,555.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,419.69 : 80,619.06 = 31,562.11 : x
  2. Step 2: Convert to fraction form
    58,419.69/80,619.06 = 31,562.11/x
  3. Step 3: Cross multiply
    58,419.69x = 80,619.06 × 31,562.11
  4. Step 4: Simplify right side
    58,419.69x = 2,544,507,639.82
  5. Step 5: Solve for x
    x = 2,544,507,639.82/58,419.69
  6. Step 6: Final answer
    x = 43,555.65

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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.