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Finding the Fourth Proportional to 85,801.95, 128,720.07 and 29,644.11

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Solution

The fourth proportional to 85,801.95, 128,720.07 and 29,644.11 is: 44,472.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,801.95 : 128,720.07 = 29,644.11 : x
  2. Step 2: Convert to fraction form
    85,801.95/128,720.07 = 29,644.11/x
  3. Step 3: Cross multiply
    85,801.95x = 128,720.07 × 29,644.11
  4. Step 4: Simplify right side
    85,801.95x = 3,815,791,914.29
  5. Step 5: Solve for x
    x = 3,815,791,914.29/85,801.95
  6. Step 6: Final answer
    x = 44,472.09

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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.