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Finding the Fourth Proportional to 283,775.58, 391,613.04 and 156,455.82

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Solution

The fourth proportional to 283,775.58, 391,613.04 and 156,455.82 is: 215,910.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,775.58 : 391,613.04 = 156,455.82 : x
  2. Step 2: Convert to fraction form
    283,775.58/391,613.04 = 156,455.82/x
  3. Step 3: Cross multiply
    283,775.58x = 391,613.04 × 156,455.82
  4. Step 4: Simplify right side
    283,775.58x = 61,270,139,295.89
  5. Step 5: Solve for x
    x = 61,270,139,295.89/283,775.58
  6. Step 6: Final answer
    x = 215,910.54

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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.