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Finding the Fourth Proportional to 328,782.48, 493,057.08 and 118,363.92

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Solution

The fourth proportional to 328,782.48, 493,057.08 and 118,363.92 is: 177,503.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,782.48 : 493,057.08 = 118,363.92 : x
  2. Step 2: Convert to fraction form
    328,782.48/493,057.08 = 118,363.92/x
  3. Step 3: Cross multiply
    328,782.48x = 493,057.08 × 118,363.92
  4. Step 4: Simplify right side
    328,782.48x = 58,360,168,772.55
  5. Step 5: Solve for x
    x = 58,360,168,772.55/328,782.48
  6. Step 6: Final answer
    x = 177,503.89

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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.