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Finding the Fourth Proportional to 121,603.12, 167,814.69 and 70,620.10

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Solution

The fourth proportional to 121,603.12, 167,814.69 and 70,620.10 is: 97,457.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,603.12 : 167,814.69 = 70,620.10 : x
  2. Step 2: Convert to fraction form
    121,603.12/167,814.69 = 70,620.10/x
  3. Step 3: Cross multiply
    121,603.12x = 167,814.69 × 70,620.10
  4. Step 4: Simplify right side
    121,603.12x = 11,851,090,189.27
  5. Step 5: Solve for x
    x = 11,851,090,189.27/121,603.12
  6. Step 6: Final answer
    x = 97,457.12

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.