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Finding the Fourth Proportional to 100,958.80, 151,438.20 and 99,014.80

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Solution

The fourth proportional to 100,958.80, 151,438.20 and 99,014.80 is: 148,522.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,958.80 : 151,438.20 = 99,014.80 : x
  2. Step 2: Convert to fraction form
    100,958.80/151,438.20 = 99,014.80/x
  3. Step 3: Cross multiply
    100,958.80x = 151,438.20 × 99,014.80
  4. Step 4: Simplify right side
    100,958.80x = 14,994,623,085.36
  5. Step 5: Solve for x
    x = 14,994,623,085.36/100,958.80
  6. Step 6: Final answer
    x = 148,522.20

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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.