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Finding the Fourth Proportional to 66,813.85, 99,548.06 and 65,851.57

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Solution

The fourth proportional to 66,813.85, 99,548.06 and 65,851.57 is: 98,114.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,813.85 : 99,548.06 = 65,851.57 : x
  2. Step 2: Convert to fraction form
    66,813.85/99,548.06 = 65,851.57/x
  3. Step 3: Cross multiply
    66,813.85x = 99,548.06 × 65,851.57
  4. Step 4: Simplify right side
    66,813.85x = 6,555,396,041.45
  5. Step 5: Solve for x
    x = 6,555,396,041.45/66,813.85
  6. Step 6: Final answer
    x = 98,114.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.