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Finding the Fourth Proportional to 99,776.80, 149,665.20 and 95,840.20

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Solution

The fourth proportional to 99,776.80, 149,665.20 and 95,840.20 is: 143,760.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,776.80 : 149,665.20 = 95,840.20 : x
  2. Step 2: Convert to fraction form
    99,776.80/149,665.20 = 95,840.20/x
  3. Step 3: Cross multiply
    99,776.80x = 149,665.20 × 95,840.20
  4. Step 4: Simplify right side
    99,776.80x = 14,343,942,701.04
  5. Step 5: Solve for x
    x = 14,343,942,701.04/99,776.80
  6. Step 6: Final answer
    x = 143,760.30

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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.