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Finding the Fourth Proportional to 144,490.69, 216,714.16 and 39,317.86

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Solution

The fourth proportional to 144,490.69, 216,714.16 and 39,317.86 is: 58,970.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,490.69 : 216,714.16 = 39,317.86 : x
  2. Step 2: Convert to fraction form
    144,490.69/216,714.16 = 39,317.86/x
  3. Step 3: Cross multiply
    144,490.69x = 216,714.16 × 39,317.86
  4. Step 4: Simplify right side
    144,490.69x = 8,520,737,002.90
  5. Step 5: Solve for x
    x = 8,520,737,002.90/144,490.69
  6. Step 6: Final answer
    x = 58,970.84

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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.