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Finding the Fourth Proportional to 56,998.80, 85,498.20 and 15,445.80

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Solution

The fourth proportional to 56,998.80, 85,498.20 and 15,445.80 is: 23,168.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,998.80 : 85,498.20 = 15,445.80 : x
  2. Step 2: Convert to fraction form
    56,998.80/85,498.20 = 15,445.80/x
  3. Step 3: Cross multiply
    56,998.80x = 85,498.20 × 15,445.80
  4. Step 4: Simplify right side
    56,998.80x = 1,320,588,097.56
  5. Step 5: Solve for x
    x = 1,320,588,097.56/56,998.80
  6. Step 6: Final answer
    x = 23,168.70

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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.