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Finding the Fourth Proportional to 283,995.76, 391,911.96 and 156,676.72

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Solution

The fourth proportional to 283,995.76, 391,911.96 and 156,676.72 is: 216,212.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,995.76 : 391,911.96 = 156,676.72 : x
  2. Step 2: Convert to fraction form
    283,995.76/391,911.96 = 156,676.72/x
  3. Step 3: Cross multiply
    283,995.76x = 391,911.96 × 156,676.72
  4. Step 4: Simplify right side
    283,995.76x = 61,403,480,421.57
  5. Step 5: Solve for x
    x = 61,403,480,421.57/283,995.76
  6. Step 6: Final answer
    x = 216,212.67

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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.