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Finding the Fourth Proportional to 99,681.00, 137,563.21 and 56,662.30

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Solution

The fourth proportional to 99,681.00, 137,563.21 and 56,662.30 is: 78,195.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,681.00 : 137,563.21 = 56,662.30 : x
  2. Step 2: Convert to fraction form
    99,681.00/137,563.21 = 56,662.30/x
  3. Step 3: Cross multiply
    99,681.00x = 137,563.21 × 56,662.30
  4. Step 4: Simplify right side
    99,681.00x = 7,794,647,536.42
  5. Step 5: Solve for x
    x = 7,794,647,536.42/99,681.00
  6. Step 6: Final answer
    x = 78,195.92

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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.