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Finding the Fourth Proportional to 293,280, 439,910.64 and 93,612.54

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Solution

The fourth proportional to 293,280, 439,910.64 and 93,612.54 is: 140,415.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,280 : 439,910.64 = 93,612.54 : x
  2. Step 2: Convert to fraction form
    293,280/439,910.64 = 93,612.54/x
  3. Step 3: Cross multiply
    293,280x = 439,910.64 × 93,612.54
  4. Step 4: Simplify right side
    293,280x = 41,181,152,383.43
  5. Step 5: Solve for x
    x = 41,181,152,383.43/293,280
  6. Step 6: Final answer
    x = 140,415.82

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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.