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Finding the Fourth Proportional to 67,712, 93,420.96 and 43,856.96

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Solution

The fourth proportional to 67,712, 93,420.96 and 43,856.96 is: 60,508.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,712 : 93,420.96 = 43,856.96 : x
  2. Step 2: Convert to fraction form
    67,712/93,420.96 = 43,856.96/x
  3. Step 3: Cross multiply
    67,712x = 93,420.96 × 43,856.96
  4. Step 4: Simplify right side
    67,712x = 4,097,159,305.88
  5. Step 5: Solve for x
    x = 4,097,159,305.88/67,712
  6. Step 6: Final answer
    x = 60,508.61

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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.