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Finding the Fourth Proportional to 283,653.95, 391,435.71 and 154,596.50

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Solution

The fourth proportional to 283,653.95, 391,435.71 and 154,596.50 is: 213,339.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,653.95 : 391,435.71 = 154,596.50 : x
  2. Step 2: Convert to fraction form
    283,653.95/391,435.71 = 154,596.50/x
  3. Step 3: Cross multiply
    283,653.95x = 391,435.71 × 154,596.50
  4. Step 4: Simplify right side
    283,653.95x = 60,514,589,671.98
  5. Step 5: Solve for x
    x = 60,514,589,671.98/283,653.95
  6. Step 6: Final answer
    x = 213,339.49

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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.