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Finding the Fourth Proportional to 436,563.70, 653,533.35 and 258,979.30

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Solution

The fourth proportional to 436,563.70, 653,533.35 and 258,979.30 is: 387,690.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,563.70 : 653,533.35 = 258,979.30 : x
  2. Step 2: Convert to fraction form
    436,563.70/653,533.35 = 258,979.30/x
  3. Step 3: Cross multiply
    436,563.70x = 653,533.35 × 258,979.30
  4. Step 4: Simplify right side
    436,563.70x = 169,251,609,509.66
  5. Step 5: Solve for x
    x = 169,251,609,509.66/436,563.70
  6. Step 6: Final answer
    x = 387,690.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.