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Finding the Fourth Proportional to 424,825.60, 637,236.78 and 158,653.12

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Solution

The fourth proportional to 424,825.60, 637,236.78 and 158,653.12 is: 237,979.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,825.60 : 637,236.78 = 158,653.12 : x
  2. Step 2: Convert to fraction form
    424,825.60/637,236.78 = 158,653.12/x
  3. Step 3: Cross multiply
    424,825.60x = 637,236.78 × 158,653.12
  4. Step 4: Simplify right side
    424,825.60x = 101,099,603,325.75
  5. Step 5: Solve for x
    x = 101,099,603,325.75/424,825.60
  6. Step 6: Final answer
    x = 237,979.08

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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.