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Finding the Fourth Proportional to 121,457.66, 167,611.83 and 67,741.30

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Solution

The fourth proportional to 121,457.66, 167,611.83 and 67,741.30 is: 93,483.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,457.66 : 167,611.83 = 67,741.30 : x
  2. Step 2: Convert to fraction form
    121,457.66/167,611.83 = 67,741.30/x
  3. Step 3: Cross multiply
    121,457.66x = 167,611.83 × 67,741.30
  4. Step 4: Simplify right side
    121,457.66x = 11,354,242,082.81
  5. Step 5: Solve for x
    x = 11,354,242,082.81/121,457.66
  6. Step 6: Final answer
    x = 93,483.13

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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.