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Finding the Fourth Proportional to 355,400.62, 533,128.98 and 118,744.12

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Solution

The fourth proportional to 355,400.62, 533,128.98 and 118,744.12 is: 178,125.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,400.62 : 533,128.98 = 118,744.12 : x
  2. Step 2: Convert to fraction form
    355,400.62/533,128.98 = 118,744.12/x
  3. Step 3: Cross multiply
    355,400.62x = 533,128.98 × 118,744.12
  4. Step 4: Simplify right side
    355,400.62x = 63,305,931,576.60
  5. Step 5: Solve for x
    x = 63,305,931,576.60/355,400.62
  6. Step 6: Final answer
    x = 178,125.55

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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.