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Finding the Fourth Proportional to 66,455.01, 99,600.44 and 57,028.77

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Solution

The fourth proportional to 66,455.01, 99,600.44 and 57,028.77 is: 85,472.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,455.01 : 99,600.44 = 57,028.77 : x
  2. Step 2: Convert to fraction form
    66,455.01/99,600.44 = 57,028.77/x
  3. Step 3: Cross multiply
    66,455.01x = 99,600.44 × 57,028.77
  4. Step 4: Simplify right side
    66,455.01x = 5,680,090,299.51
  5. Step 5: Solve for x
    x = 5,680,090,299.51/66,455.01
  6. Step 6: Final answer
    x = 85,472.72

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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.