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Finding the Fourth Proportional to 121,005.06, 166,991.04 and 66,559.53

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Solution

The fourth proportional to 121,005.06, 166,991.04 and 66,559.53 is: 91,854.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,005.06 : 166,991.04 = 66,559.53 : x
  2. Step 2: Convert to fraction form
    121,005.06/166,991.04 = 66,559.53/x
  3. Step 3: Cross multiply
    121,005.06x = 166,991.04 × 66,559.53
  4. Step 4: Simplify right side
    121,005.06x = 11,114,845,136.61
  5. Step 5: Solve for x
    x = 11,114,845,136.61/121,005.06
  6. Step 6: Final answer
    x = 91,854.38

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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.