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Finding the Fourth Proportional to 312,011.90, 468,087.96 and 98,792.56

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Solution

The fourth proportional to 312,011.90, 468,087.96 and 98,792.56 is: 148,211.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,011.90 : 468,087.96 = 98,792.56 : x
  2. Step 2: Convert to fraction form
    312,011.90/468,087.96 = 98,792.56/x
  3. Step 3: Cross multiply
    312,011.90x = 468,087.96 × 98,792.56
  4. Step 4: Simplify right side
    312,011.90x = 46,243,608,829.16
  5. Step 5: Solve for x
    x = 46,243,608,829.16/312,011.90
  6. Step 6: Final answer
    x = 148,211.04

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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.