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Finding the Fourth Proportional to 121,191.36, 167,242.08 and 70,898.88

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Solution

The fourth proportional to 121,191.36, 167,242.08 and 70,898.88 is: 97,839.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,191.36 : 167,242.08 = 70,898.88 : x
  2. Step 2: Convert to fraction form
    121,191.36/167,242.08 = 70,898.88/x
  3. Step 3: Cross multiply
    121,191.36x = 167,242.08 × 70,898.88
  4. Step 4: Simplify right side
    121,191.36x = 11,857,276,160.87
  5. Step 5: Solve for x
    x = 11,857,276,160.87/121,191.36
  6. Step 6: Final answer
    x = 97,839.29

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1.5x scale

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.