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Finding the Fourth Proportional to 66,114.88, 99,172.32 and 16,866.88

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Solution

The fourth proportional to 66,114.88, 99,172.32 and 16,866.88 is: 25,300.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,114.88 : 99,172.32 = 16,866.88 : x
  2. Step 2: Convert to fraction form
    66,114.88/99,172.32 = 16,866.88/x
  3. Step 3: Cross multiply
    66,114.88x = 99,172.32 × 16,866.88
  4. Step 4: Simplify right side
    66,114.88x = 1,672,727,620.76
  5. Step 5: Solve for x
    x = 1,672,727,620.76/66,114.88
  6. Step 6: Final answer
    x = 25,300.32

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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.