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Finding the Fourth Proportional to 624,175.10, 935,715.90 and 423,845.90

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Solution

The fourth proportional to 624,175.10, 935,715.90 and 423,845.90 is: 635,397.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,175.10 : 935,715.90 = 423,845.90 : x
  2. Step 2: Convert to fraction form
    624,175.10/935,715.90 = 423,845.90/x
  3. Step 3: Cross multiply
    624,175.10x = 935,715.90 × 423,845.90
  4. Step 4: Simplify right side
    624,175.10x = 396,599,347,779.81
  5. Step 5: Solve for x
    x = 396,599,347,779.81/624,175.10
  6. Step 6: Final answer
    x = 635,397.58

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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.