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Finding the Fourth Proportional to 229,062.44, 316,105.86 and 128,459.56

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Solution

The fourth proportional to 229,062.44, 316,105.86 and 128,459.56 is: 177,274.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,062.44 : 316,105.86 = 128,459.56 : x
  2. Step 2: Convert to fraction form
    229,062.44/316,105.86 = 128,459.56/x
  3. Step 3: Cross multiply
    229,062.44x = 316,105.86 × 128,459.56
  4. Step 4: Simplify right side
    229,062.44x = 40,606,819,689.02
  5. Step 5: Solve for x
    x = 40,606,819,689.02/229,062.44
  6. Step 6: Final answer
    x = 177,274.02

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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.