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Finding the Fourth Proportional to 283,418.16, 391,134.75 and 156,093.72

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Solution

The fourth proportional to 283,418.16, 391,134.75 and 156,093.72 is: 215,419.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,418.16 : 391,134.75 = 156,093.72 : x
  2. Step 2: Convert to fraction form
    283,418.16/391,134.75 = 156,093.72/x
  3. Step 3: Cross multiply
    283,418.16x = 391,134.75 × 156,093.72
  4. Step 4: Simplify right side
    283,418.16x = 61,053,678,148.77
  5. Step 5: Solve for x
    x = 61,053,678,148.77/283,418.16
  6. Step 6: Final answer
    x = 215,419.08

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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.