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Finding the Fourth Proportional to 399,096.60, 598,644.90 and 162,317.40

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Solution

The fourth proportional to 399,096.60, 598,644.90 and 162,317.40 is: 243,476.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,096.60 : 598,644.90 = 162,317.40 : x
  2. Step 2: Convert to fraction form
    399,096.60/598,644.90 = 162,317.40/x
  3. Step 3: Cross multiply
    399,096.60x = 598,644.90 × 162,317.40
  4. Step 4: Simplify right side
    399,096.60x = 97,170,483,691.26
  5. Step 5: Solve for x
    x = 97,170,483,691.26/399,096.60
  6. Step 6: Final answer
    x = 243,476.10

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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.