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Finding the Fourth Proportional to 53,988.79, 80,983.17 and 28,994.44

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Solution

The fourth proportional to 53,988.79, 80,983.17 and 28,994.44 is: 43,491.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,988.79 : 80,983.17 = 28,994.44 : x
  2. Step 2: Convert to fraction form
    53,988.79/80,983.17 = 28,994.44/x
  3. Step 3: Cross multiply
    53,988.79x = 80,983.17 × 28,994.44
  4. Step 4: Simplify right side
    53,988.79x = 2,348,061,663.57
  5. Step 5: Solve for x
    x = 2,348,061,663.57/53,988.79
  6. Step 6: Final answer
    x = 43,491.65

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Double scale
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Similar ratio
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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.