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Finding the Fourth Proportional to 66,441.83, 99,645.71 and 19,683.77

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Solution

The fourth proportional to 66,441.83, 99,645.71 and 19,683.77 is: 29,520.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,441.83 : 99,645.71 = 19,683.77 : x
  2. Step 2: Convert to fraction form
    66,441.83/99,645.71 = 19,683.77/x
  3. Step 3: Cross multiply
    66,441.83x = 99,645.71 × 19,683.77
  4. Step 4: Simplify right side
    66,441.83x = 1,961,402,640.48
  5. Step 5: Solve for x
    x = 1,961,402,640.48/66,441.83
  6. Step 6: Final answer
    x = 29,520.60

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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.