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Finding the Fourth Proportional to 423,792.56, 636,244.44 and 284,175.92

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Solution

The fourth proportional to 423,792.56, 636,244.44 and 284,175.92 is: 426,636.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,792.56 : 636,244.44 = 284,175.92 : x
  2. Step 2: Convert to fraction form
    423,792.56/636,244.44 = 284,175.92/x
  3. Step 3: Cross multiply
    423,792.56x = 636,244.44 × 284,175.92
  4. Step 4: Simplify right side
    423,792.56x = 180,805,349,081.89
  5. Step 5: Solve for x
    x = 180,805,349,081.89/423,792.56
  6. Step 6: Final answer
    x = 426,636.44

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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.