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Finding the Fourth Proportional to 121,368.64, 167,494.40 and 67,654.04

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Solution

The fourth proportional to 121,368.64, 167,494.40 and 67,654.04 is: 93,365.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,368.64 : 167,494.40 = 67,654.04 : x
  2. Step 2: Convert to fraction form
    121,368.64/167,494.40 = 67,654.04/x
  3. Step 3: Cross multiply
    121,368.64x = 167,494.40 × 67,654.04
  4. Step 4: Simplify right side
    121,368.64x = 11,331,672,837.38
  5. Step 5: Solve for x
    x = 11,331,672,837.38/121,368.64
  6. Step 6: Final answer
    x = 93,365.74

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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.