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Finding the Fourth Proportional to 61,622.79, 85,091.30 and 39,001.70

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Solution

The fourth proportional to 61,622.79, 85,091.30 and 39,001.70 is: 53,855.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,622.79 : 85,091.30 = 39,001.70 : x
  2. Step 2: Convert to fraction form
    61,622.79/85,091.30 = 39,001.70/x
  3. Step 3: Cross multiply
    61,622.79x = 85,091.30 × 39,001.70
  4. Step 4: Simplify right side
    61,622.79x = 3,318,704,734.75
  5. Step 5: Solve for x
    x = 3,318,704,734.75/61,622.79
  6. Step 6: Final answer
    x = 53,855.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.