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Finding the Fourth Proportional to 436,561.70, 653,530.35 and 258,977.30

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Solution

The fourth proportional to 436,561.70, 653,530.35 and 258,977.30 is: 387,687.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,561.70 : 653,530.35 = 258,977.30 : x
  2. Step 2: Convert to fraction form
    436,561.70/653,530.35 = 258,977.30/x
  3. Step 3: Cross multiply
    436,561.70x = 653,530.35 × 258,977.30
  4. Step 4: Simplify right side
    436,561.70x = 169,249,525,511.06
  5. Step 5: Solve for x
    x = 169,249,525,511.06/436,561.70
  6. Step 6: Final answer
    x = 387,687.53

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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.