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Finding the Fourth Proportional to 118,407.78, 177,681.72 and 43,580.48

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Solution

The fourth proportional to 118,407.78, 177,681.72 and 43,580.48 is: 65,396.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,407.78 : 177,681.72 = 43,580.48 : x
  2. Step 2: Convert to fraction form
    118,407.78/177,681.72 = 43,580.48/x
  3. Step 3: Cross multiply
    118,407.78x = 177,681.72 × 43,580.48
  4. Step 4: Simplify right side
    118,407.78x = 7,743,454,644.83
  5. Step 5: Solve for x
    x = 7,743,454,644.83/118,407.78
  6. Step 6: Final answer
    x = 65,396.50

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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.