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Finding the Fourth Proportional to 638,716.53, 881,399.16 and 366,592.91

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Solution

The fourth proportional to 638,716.53, 881,399.16 and 366,592.91 is: 505,881.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,716.53 : 881,399.16 = 366,592.91 : x
  2. Step 2: Convert to fraction form
    638,716.53/881,399.16 = 366,592.91/x
  3. Step 3: Cross multiply
    638,716.53x = 881,399.16 × 366,592.91
  4. Step 4: Simplify right side
    638,716.53x = 323,114,678,528.96
  5. Step 5: Solve for x
    x = 323,114,678,528.96/638,716.53
  6. Step 6: Final answer
    x = 505,881.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.