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Finding the Fourth Proportional to 358,446.66, 537,671.49 and 145,218.70

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Solution

The fourth proportional to 358,446.66, 537,671.49 and 145,218.70 is: 217,828.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,446.66 : 537,671.49 = 145,218.70 : x
  2. Step 2: Convert to fraction form
    358,446.66/537,671.49 = 145,218.70/x
  3. Step 3: Cross multiply
    358,446.66x = 537,671.49 × 145,218.70
  4. Step 4: Simplify right side
    358,446.66x = 78,079,954,804.86
  5. Step 5: Solve for x
    x = 78,079,954,804.86/358,446.66
  6. Step 6: Final answer
    x = 217,828.66

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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.