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Finding the Fourth Proportional to 66,706.64, 100,219.32 and 39,024.08

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Solution

The fourth proportional to 66,706.64, 100,219.32 and 39,024.08 is: 58,629.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,706.64 : 100,219.32 = 39,024.08 : x
  2. Step 2: Convert to fraction form
    66,706.64/100,219.32 = 39,024.08/x
  3. Step 3: Cross multiply
    66,706.64x = 100,219.32 × 39,024.08
  4. Step 4: Simplify right side
    66,706.64x = 3,910,966,761.23
  5. Step 5: Solve for x
    x = 3,910,966,761.23/66,706.64
  6. Step 6: Final answer
    x = 58,629.35

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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.