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Finding the Fourth Proportional to 74,846.63, 112,210.31 and 43,220.79

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Solution

The fourth proportional to 74,846.63, 112,210.31 and 43,220.79 is: 64,796.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,846.63 : 112,210.31 = 43,220.79 : x
  2. Step 2: Convert to fraction form
    74,846.63/112,210.31 = 43,220.79/x
  3. Step 3: Cross multiply
    74,846.63x = 112,210.31 × 43,220.79
  4. Step 4: Simplify right side
    74,846.63x = 4,849,818,352.40
  5. Step 5: Solve for x
    x = 4,849,818,352.40/74,846.63
  6. Step 6: Final answer
    x = 64,796.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.