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Finding the Fourth Proportional to 157,576.21, 217,458.21 and 85,958.86

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Solution

The fourth proportional to 157,576.21, 217,458.21 and 85,958.86 is: 118,624.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,576.21 : 217,458.21 = 85,958.86 : x
  2. Step 2: Convert to fraction form
    157,576.21/217,458.21 = 85,958.86/x
  3. Step 3: Cross multiply
    157,576.21x = 217,458.21 × 85,958.86
  4. Step 4: Simplify right side
    157,576.21x = 18,692,459,829.24
  5. Step 5: Solve for x
    x = 18,692,459,829.24/157,576.21
  6. Step 6: Final answer
    x = 118,624.89

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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.