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Finding the Fourth Proportional to 121,308.51, 167,404.05 and 67,595.79

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Solution

The fourth proportional to 121,308.51, 167,404.05 and 67,595.79 is: 93,281.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,308.51 : 167,404.05 = 67,595.79 : x
  2. Step 2: Convert to fraction form
    121,308.51/167,404.05 = 67,595.79/x
  3. Step 3: Cross multiply
    121,308.51x = 167,404.05 × 67,595.79
  4. Step 4: Simplify right side
    121,308.51x = 11,315,809,008.95
  5. Step 5: Solve for x
    x = 11,315,809,008.95/121,308.51
  6. Step 6: Final answer
    x = 93,281.25

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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.