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Finding the Fourth Proportional to 66,603.79, 99,840.75 and 26,610.85

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Solution

The fourth proportional to 66,603.79, 99,840.75 and 26,610.85 is: 39,890.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,603.79 : 99,840.75 = 26,610.85 : x
  2. Step 2: Convert to fraction form
    66,603.79/99,840.75 = 26,610.85/x
  3. Step 3: Cross multiply
    66,603.79x = 99,840.75 × 26,610.85
  4. Step 4: Simplify right side
    66,603.79x = 2,656,847,222.14
  5. Step 5: Solve for x
    x = 2,656,847,222.14/66,603.79
  6. Step 6: Final answer
    x = 39,890.33

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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.