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Finding the Fourth Proportional to 355,635.90, 533,342.79 and 118,923.30

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Solution

The fourth proportional to 355,635.90, 533,342.79 and 118,923.30 is: 178,347.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,635.90 : 533,342.79 = 118,923.30 : x
  2. Step 2: Convert to fraction form
    355,635.90/533,342.79 = 118,923.30/x
  3. Step 3: Cross multiply
    355,635.90x = 533,342.79 × 118,923.30
  4. Step 4: Simplify right side
    355,635.90x = 63,426,884,618.01
  5. Step 5: Solve for x
    x = 63,426,884,618.01/355,635.90
  6. Step 6: Final answer
    x = 178,347.81

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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.