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Finding the Fourth Proportional to 283,497.48, 391,226.82 and 156,173.16

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Solution

The fourth proportional to 283,497.48, 391,226.82 and 156,173.16 is: 215,519.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,497.48 : 391,226.82 = 156,173.16 : x
  2. Step 2: Convert to fraction form
    283,497.48/391,226.82 = 156,173.16/x
  3. Step 3: Cross multiply
    283,497.48x = 391,226.82 × 156,173.16
  4. Step 4: Simplify right side
    283,497.48x = 61,099,128,756.15
  5. Step 5: Solve for x
    x = 61,099,128,756.15/283,497.48
  6. Step 6: Final answer
    x = 215,519.12

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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.