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Finding the Fourth Proportional to 283,357.16, 391,018.84 and 156,008.96

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Solution

The fourth proportional to 283,357.16, 391,018.84 and 156,008.96 is: 215,284.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,357.16 : 391,018.84 = 156,008.96 : x
  2. Step 2: Convert to fraction form
    283,357.16/391,018.84 = 156,008.96/x
  3. Step 3: Cross multiply
    283,357.16x = 391,018.84 × 156,008.96
  4. Step 4: Simplify right side
    283,357.16x = 61,002,442,568.81
  5. Step 5: Solve for x
    x = 61,002,442,568.81/283,357.16
  6. Step 6: Final answer
    x = 215,284.63

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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.