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Finding the Fourth Proportional to 121,607.76, 167,801.58 and 67,885.32

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Solution

The fourth proportional to 121,607.76, 167,801.58 and 67,885.32 is: 93,672.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,607.76 : 167,801.58 = 67,885.32 : x
  2. Step 2: Convert to fraction form
    121,607.76/167,801.58 = 67,885.32/x
  3. Step 3: Cross multiply
    121,607.76x = 167,801.58 × 67,885.32
  4. Step 4: Simplify right side
    121,607.76x = 11,391,263,954.81
  5. Step 5: Solve for x
    x = 11,391,263,954.81/121,607.76
  6. Step 6: Final answer
    x = 93,672.18

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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.