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Finding the Fourth Proportional to 12,561.70, 18,841.63 and 5,065.77

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Solution

The fourth proportional to 12,561.70, 18,841.63 and 5,065.77 is: 7,598.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,561.70 : 18,841.63 = 5,065.77 : x
  2. Step 2: Convert to fraction form
    12,561.70/18,841.63 = 5,065.77/x
  3. Step 3: Cross multiply
    12,561.70x = 18,841.63 × 5,065.77
  4. Step 4: Simplify right side
    12,561.70x = 95,447,364.01
  5. Step 5: Solve for x
    x = 95,447,364.01/12,561.70
  6. Step 6: Final answer
    x = 7,598.28

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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.