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Finding the Fourth Proportional to 355,006.70, 532,315.65 and 144,406.70

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Solution

The fourth proportional to 355,006.70, 532,315.65 and 144,406.70 is: 216,530.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,006.70 : 532,315.65 = 144,406.70 : x
  2. Step 2: Convert to fraction form
    355,006.70/532,315.65 = 144,406.70/x
  3. Step 3: Cross multiply
    355,006.70x = 532,315.65 × 144,406.70
  4. Step 4: Simplify right side
    355,006.70x = 76,869,946,374.86
  5. Step 5: Solve for x
    x = 76,869,946,374.86/355,006.70
  6. Step 6: Final answer
    x = 216,530.97

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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.