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Finding the Fourth Proportional to 630,137.64, 869,098.46 and 403,804.20

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Solution

The fourth proportional to 630,137.64, 869,098.46 and 403,804.20 is: 556,934.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,137.64 : 869,098.46 = 403,804.20 : x
  2. Step 2: Convert to fraction form
    630,137.64/869,098.46 = 403,804.20/x
  3. Step 3: Cross multiply
    630,137.64x = 869,098.46 × 403,804.20
  4. Step 4: Simplify right side
    630,137.64x = 350,945,608,361.53
  5. Step 5: Solve for x
    x = 350,945,608,361.53/630,137.64
  6. Step 6: Final answer
    x = 556,934.84

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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.