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Finding the Fourth Proportional to 12,543.76, 17,270.76 and 11,046.16

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Solution

The fourth proportional to 12,543.76, 17,270.76 and 11,046.16 is: 15,208.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,543.76 : 17,270.76 = 11,046.16 : x
  2. Step 2: Convert to fraction form
    12,543.76/17,270.76 = 11,046.16/x
  3. Step 3: Cross multiply
    12,543.76x = 17,270.76 × 11,046.16
  4. Step 4: Simplify right side
    12,543.76x = 190,775,578.28
  5. Step 5: Solve for x
    x = 190,775,578.28/12,543.76
  6. Step 6: Final answer
    x = 15,208.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.