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Finding the Fourth Proportional to 355,005.70, 532,314.15 and 144,405.70

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Solution

The fourth proportional to 355,005.70, 532,314.15 and 144,405.70 is: 216,529.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,005.70 : 532,314.15 = 144,405.70 : x
  2. Step 2: Convert to fraction form
    355,005.70/532,314.15 = 144,405.70/x
  3. Step 3: Cross multiply
    355,005.70x = 532,314.15 × 144,405.70
  4. Step 4: Simplify right side
    355,005.70x = 76,869,197,450.66
  5. Step 5: Solve for x
    x = 76,869,197,450.66/355,005.70
  6. Step 6: Final answer
    x = 216,529.47

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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.