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Finding the Fourth Proportional to 388,005.90, 582,096.42 and 118,158.18

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Solution

The fourth proportional to 388,005.90, 582,096.42 and 118,158.18 is: 177,263.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,005.90 : 582,096.42 = 118,158.18 : x
  2. Step 2: Convert to fraction form
    388,005.90/582,096.42 = 118,158.18/x
  3. Step 3: Cross multiply
    388,005.90x = 582,096.42 × 118,158.18
  4. Step 4: Simplify right side
    388,005.90x = 68,779,453,571.72
  5. Step 5: Solve for x
    x = 68,779,453,571.72/388,005.90
  6. Step 6: Final answer
    x = 177,263.94

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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.