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Finding the Fourth Proportional to 482,689.44, 724,068.80 and 127,699.26

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Solution

The fourth proportional to 482,689.44, 724,068.80 and 127,699.26 is: 191,558.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,689.44 : 724,068.80 = 127,699.26 : x
  2. Step 2: Convert to fraction form
    482,689.44/724,068.80 = 127,699.26/x
  3. Step 3: Cross multiply
    482,689.44x = 724,068.80 × 127,699.26
  4. Step 4: Simplify right side
    482,689.44x = 92,463,049,949.09
  5. Step 5: Solve for x
    x = 92,463,049,949.09/482,689.44
  6. Step 6: Final answer
    x = 191,558.05

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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.