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Finding the Fourth Proportional to 139,995.54, 193,194.72 and 76,334.40

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Solution

The fourth proportional to 139,995.54, 193,194.72 and 76,334.40 is: 105,341.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,995.54 : 193,194.72 = 76,334.40 : x
  2. Step 2: Convert to fraction form
    139,995.54/193,194.72 = 76,334.40/x
  3. Step 3: Cross multiply
    139,995.54x = 193,194.72 × 76,334.40
  4. Step 4: Simplify right side
    139,995.54x = 14,747,403,034.37
  5. Step 5: Solve for x
    x = 14,747,403,034.37/139,995.54
  6. Step 6: Final answer
    x = 105,341.95

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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.