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Finding the Fourth Proportional to 66,603.26, 99,902.57 and 16,683.78

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Solution

The fourth proportional to 66,603.26, 99,902.57 and 16,683.78 is: 25,025.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,603.26 : 99,902.57 = 16,683.78 : x
  2. Step 2: Convert to fraction form
    66,603.26/99,902.57 = 16,683.78/x
  3. Step 3: Cross multiply
    66,603.26x = 99,902.57 × 16,683.78
  4. Step 4: Simplify right side
    66,603.26x = 1,666,752,541.02
  5. Step 5: Solve for x
    x = 1,666,752,541.02/66,603.26
  6. Step 6: Final answer
    x = 25,025.09

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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.