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Finding the Fourth Proportional to 130,393.60, 179,766.48 and 111,476.57

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Solution

The fourth proportional to 130,393.60, 179,766.48 and 111,476.57 is: 153,686.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,393.60 : 179,766.48 = 111,476.57 : x
  2. Step 2: Convert to fraction form
    130,393.60/179,766.48 = 111,476.57/x
  3. Step 3: Cross multiply
    130,393.60x = 179,766.48 × 111,476.57
  4. Step 4: Simplify right side
    130,393.60x = 20,039,750,591.37
  5. Step 5: Solve for x
    x = 20,039,750,591.37/130,393.60
  6. Step 6: Final answer
    x = 153,686.61

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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.