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Finding the Fourth Proportional to 66,551.36, 99,841.36 and 19,166.12

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Solution

The fourth proportional to 66,551.36, 99,841.36 and 19,166.12 is: 28,753.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,551.36 : 99,841.36 = 19,166.12 : x
  2. Step 2: Convert to fraction form
    66,551.36/99,841.36 = 19,166.12/x
  3. Step 3: Cross multiply
    66,551.36x = 99,841.36 × 19,166.12
  4. Step 4: Simplify right side
    66,551.36x = 1,913,571,486.72
  5. Step 5: Solve for x
    x = 1,913,571,486.72/66,551.36
  6. Step 6: Final answer
    x = 28,753.30

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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.