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Finding the Fourth Proportional to 283,653.54, 391,439.88 and 156,329.28

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Solution

The fourth proportional to 283,653.54, 391,439.88 and 156,329.28 is: 215,733.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,653.54 : 391,439.88 = 156,329.28 : x
  2. Step 2: Convert to fraction form
    283,653.54/391,439.88 = 156,329.28/x
  3. Step 3: Cross multiply
    283,653.54x = 391,439.88 × 156,329.28
  4. Step 4: Simplify right side
    283,653.54x = 61,193,514,603.69
  5. Step 5: Solve for x
    x = 61,193,514,603.69/283,653.54
  6. Step 6: Final answer
    x = 215,733.30

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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.