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Finding the Fourth Proportional to 250,612.64, 375,918.64 and 61,072.80

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Solution

The fourth proportional to 250,612.64, 375,918.64 and 61,072.80 is: 91,609.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,612.64 : 375,918.64 = 61,072.80 : x
  2. Step 2: Convert to fraction form
    250,612.64/375,918.64 = 61,072.80/x
  3. Step 3: Cross multiply
    250,612.64x = 375,918.64 × 61,072.80
  4. Step 4: Simplify right side
    250,612.64x = 22,958,403,916.99
  5. Step 5: Solve for x
    x = 22,958,403,916.99/250,612.64
  6. Step 6: Final answer
    x = 91,609.12

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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.