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Finding the Fourth Proportional to 256,083.59, 384,125.45 and 87,605.52

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Solution

The fourth proportional to 256,083.59, 384,125.45 and 87,605.52 is: 131,408.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,083.59 : 384,125.45 = 87,605.52 : x
  2. Step 2: Convert to fraction form
    256,083.59/384,125.45 = 87,605.52/x
  3. Step 3: Cross multiply
    256,083.59x = 384,125.45 × 87,605.52
  4. Step 4: Simplify right side
    256,083.59x = 33,651,509,354.46
  5. Step 5: Solve for x
    x = 33,651,509,354.46/256,083.59
  6. Step 6: Final answer
    x = 131,408.30

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1.5x scale

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.