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Finding the Fourth Proportional to 66,639.04, 99,957.84 and 19,892.32

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Solution

The fourth proportional to 66,639.04, 99,957.84 and 19,892.32 is: 29,838.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,639.04 : 99,957.84 = 19,892.32 : x
  2. Step 2: Convert to fraction form
    66,639.04/99,957.84 = 19,892.32/x
  3. Step 3: Cross multiply
    66,639.04x = 99,957.84 × 19,892.32
  4. Step 4: Simplify right side
    66,639.04x = 1,988,393,339.79
  5. Step 5: Solve for x
    x = 1,988,393,339.79/66,639.04
  6. Step 6: Final answer
    x = 29,838.27

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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.