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Finding the Fourth Proportional to 177,440.36, 266,212.50 and 66,641

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Solution

The fourth proportional to 177,440.36, 266,212.50 and 66,641 is: 99,981.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,440.36 : 266,212.50 = 66,641 : x
  2. Step 2: Convert to fraction form
    177,440.36/266,212.50 = 66,641/x
  3. Step 3: Cross multiply
    177,440.36x = 266,212.50 × 66,641
  4. Step 4: Simplify right side
    177,440.36x = 17,740,667,212.50
  5. Step 5: Solve for x
    x = 17,740,667,212.50/177,440.36
  6. Step 6: Final answer
    x = 99,981.01

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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.