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Finding the Fourth Proportional to 76,888.22, 106,109.43 and 43,353.50

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Solution

The fourth proportional to 76,888.22, 106,109.43 and 43,353.50 is: 59,829.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,888.22 : 106,109.43 = 43,353.50 : x
  2. Step 2: Convert to fraction form
    76,888.22/106,109.43 = 43,353.50/x
  3. Step 3: Cross multiply
    76,888.22x = 106,109.43 × 43,353.50
  4. Step 4: Simplify right side
    76,888.22x = 4,600,215,173.51
  5. Step 5: Solve for x
    x = 4,600,215,173.51/76,888.22
  6. Step 6: Final answer
    x = 59,829.91

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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.