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Finding the Fourth Proportional to 185,670.89, 256,218.44 and 105,115.11

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Solution

The fourth proportional to 185,670.89, 256,218.44 and 105,115.11 is: 145,054.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,670.89 : 256,218.44 = 105,115.11 : x
  2. Step 2: Convert to fraction form
    185,670.89/256,218.44 = 105,115.11/x
  3. Step 3: Cross multiply
    185,670.89x = 256,218.44 × 105,115.11
  4. Step 4: Simplify right side
    185,670.89x = 26,932,428,979.05
  5. Step 5: Solve for x
    x = 26,932,428,979.05/185,670.89
  6. Step 6: Final answer
    x = 145,054.67

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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.