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Finding the Fourth Proportional to 35,907.60, 53,865.84 and 12,219.12

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Solution

The fourth proportional to 35,907.60, 53,865.84 and 12,219.12 is: 18,330.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,907.60 : 53,865.84 = 12,219.12 : x
  2. Step 2: Convert to fraction form
    35,907.60/53,865.84 = 12,219.12/x
  3. Step 3: Cross multiply
    35,907.60x = 53,865.84 × 12,219.12
  4. Step 4: Simplify right side
    35,907.60x = 658,193,162.86
  5. Step 5: Solve for x
    x = 658,193,162.86/35,907.60
  6. Step 6: Final answer
    x = 18,330.19

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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.