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Finding the Fourth Proportional to 149,185.55, 205,859.18 and 87,927.74

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Solution

The fourth proportional to 149,185.55, 205,859.18 and 87,927.74 is: 121,330.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,185.55 : 205,859.18 = 87,927.74 : x
  2. Step 2: Convert to fraction form
    149,185.55/205,859.18 = 87,927.74/x
  3. Step 3: Cross multiply
    149,185.55x = 205,859.18 × 87,927.74
  4. Step 4: Simplify right side
    149,185.55x = 18,100,730,986.72
  5. Step 5: Solve for x
    x = 18,100,730,986.72/149,185.55
  6. Step 6: Final answer
    x = 121,330.33

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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.