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Finding the Fourth Proportional to 424,575.15, 636,841.95 and 158,314.89

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Solution

The fourth proportional to 424,575.15, 636,841.95 and 158,314.89 is: 237,464.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,575.15 : 636,841.95 = 158,314.89 : x
  2. Step 2: Convert to fraction form
    424,575.15/636,841.95 = 158,314.89/x
  3. Step 3: Cross multiply
    424,575.15x = 636,841.95 × 158,314.89
  4. Step 4: Simplify right side
    424,575.15x = 100,821,563,261.64
  5. Step 5: Solve for x
    x = 100,821,563,261.64/424,575.15
  6. Step 6: Final answer
    x = 237,464.59

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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.