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Finding the Fourth Proportional to 291,710.70, 436,909.95 and 173,612.70

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Solution

The fourth proportional to 291,710.70, 436,909.95 and 173,612.70 is: 260,028.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,710.70 : 436,909.95 = 173,612.70 : x
  2. Step 2: Convert to fraction form
    291,710.70/436,909.95 = 173,612.70/x
  3. Step 3: Cross multiply
    291,710.70x = 436,909.95 × 173,612.70
  4. Step 4: Simplify right side
    291,710.70x = 75,853,116,076.37
  5. Step 5: Solve for x
    x = 75,853,116,076.37/291,710.70
  6. Step 6: Final answer
    x = 260,028.57

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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.