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Finding the Fourth Proportional to 121,461.90, 167,572.23 and 70,446.02

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Solution

The fourth proportional to 121,461.90, 167,572.23 and 70,446.02 is: 97,189.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,461.90 : 167,572.23 = 70,446.02 : x
  2. Step 2: Convert to fraction form
    121,461.90/167,572.23 = 70,446.02/x
  3. Step 3: Cross multiply
    121,461.90x = 167,572.23 × 70,446.02
  4. Step 4: Simplify right side
    121,461.90x = 11,804,795,563.99
  5. Step 5: Solve for x
    x = 11,804,795,563.99/121,461.90
  6. Step 6: Final answer
    x = 97,189.29

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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.