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Finding the Fourth Proportional to 56,710.80, 85,066.20 and 47,962.80

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Solution

The fourth proportional to 56,710.80, 85,066.20 and 47,962.80 is: 71,944.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,710.80 : 85,066.20 = 47,962.80 : x
  2. Step 2: Convert to fraction form
    56,710.80/85,066.20 = 47,962.80/x
  3. Step 3: Cross multiply
    56,710.80x = 85,066.20 × 47,962.80
  4. Step 4: Simplify right side
    56,710.80x = 4,080,013,137.36
  5. Step 5: Solve for x
    x = 4,080,013,137.36/56,710.80
  6. Step 6: Final answer
    x = 71,944.20

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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.