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Finding the Fourth Proportional to 121,182.59, 167,188.69 and 70,167.47

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Solution

The fourth proportional to 121,182.59, 167,188.69 and 70,167.47 is: 96,806.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,182.59 : 167,188.69 = 70,167.47 : x
  2. Step 2: Convert to fraction form
    121,182.59/167,188.69 = 70,167.47/x
  3. Step 3: Cross multiply
    121,182.59x = 167,188.69 × 70,167.47
  4. Step 4: Simplify right side
    121,182.59x = 11,731,207,389.91
  5. Step 5: Solve for x
    x = 11,731,207,389.91/121,182.59
  6. Step 6: Final answer
    x = 96,806.05

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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.