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Finding the Fourth Proportional to 99,907.20, 149,860.80 and 26,035.20

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Solution

The fourth proportional to 99,907.20, 149,860.80 and 26,035.20 is: 39,052.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,907.20 : 149,860.80 = 26,035.20 : x
  2. Step 2: Convert to fraction form
    99,907.20/149,860.80 = 26,035.20/x
  3. Step 3: Cross multiply
    99,907.20x = 149,860.80 × 26,035.20
  4. Step 4: Simplify right side
    99,907.20x = 3,901,655,900.16
  5. Step 5: Solve for x
    x = 3,901,655,900.16/99,907.20
  6. Step 6: Final answer
    x = 39,052.80

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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.