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Finding the Fourth Proportional to 99,763.80, 149,652.90 and 60,235.80

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Solution

The fourth proportional to 99,763.80, 149,652.90 and 60,235.80 is: 90,358.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,763.80 : 149,652.90 = 60,235.80 : x
  2. Step 2: Convert to fraction form
    99,763.80/149,652.90 = 60,235.80/x
  3. Step 3: Cross multiply
    99,763.80x = 149,652.90 × 60,235.80
  4. Step 4: Simplify right side
    99,763.80x = 9,014,462,153.82
  5. Step 5: Solve for x
    x = 9,014,462,153.82/99,763.80
  6. Step 6: Final answer
    x = 90,358.05

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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.