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Finding the Fourth Proportional to 171,328.88, 256,962.36 and 46,640.72

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Solution

The fourth proportional to 171,328.88, 256,962.36 and 46,640.72 is: 69,952.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,328.88 : 256,962.36 = 46,640.72 : x
  2. Step 2: Convert to fraction form
    171,328.88/256,962.36 = 46,640.72/x
  3. Step 3: Cross multiply
    171,328.88x = 256,962.36 × 46,640.72
  4. Step 4: Simplify right side
    171,328.88x = 11,984,909,483.30
  5. Step 5: Solve for x
    x = 11,984,909,483.30/171,328.88
  6. Step 6: Final answer
    x = 69,952.65

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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.