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Finding the Fourth Proportional to 193,059.65, 289,628.04 and 66,704.51

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Solution

The fourth proportional to 193,059.65, 289,628.04 and 66,704.51 is: 100,070.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,059.65 : 289,628.04 = 66,704.51 : x
  2. Step 2: Convert to fraction form
    193,059.65/289,628.04 = 66,704.51/x
  3. Step 3: Cross multiply
    193,059.65x = 289,628.04 × 66,704.51
  4. Step 4: Simplify right side
    193,059.65x = 19,319,495,042.32
  5. Step 5: Solve for x
    x = 19,319,495,042.32/193,059.65
  6. Step 6: Final answer
    x = 100,070.08

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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.