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Finding the Fourth Proportional to 439,587.52, 606,645.12 and 286,725.76

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Solution

The fourth proportional to 439,587.52, 606,645.12 and 286,725.76 is: 395,690.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,587.52 : 606,645.12 = 286,725.76 : x
  2. Step 2: Convert to fraction form
    439,587.52/606,645.12 = 286,725.76/x
  3. Step 3: Cross multiply
    439,587.52x = 606,645.12 × 286,725.76
  4. Step 4: Simplify right side
    439,587.52x = 173,940,783,082.29
  5. Step 5: Solve for x
    x = 173,940,783,082.29/439,587.52
  6. Step 6: Final answer
    x = 395,690.90

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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.