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Finding the Fourth Proportional to 404,792.60, 607,188.90 and 168,013.40

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Solution

The fourth proportional to 404,792.60, 607,188.90 and 168,013.40 is: 252,020.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,792.60 : 607,188.90 = 168,013.40 : x
  2. Step 2: Convert to fraction form
    404,792.60/607,188.90 = 168,013.40/x
  3. Step 3: Cross multiply
    404,792.60x = 607,188.90 × 168,013.40
  4. Step 4: Simplify right side
    404,792.60x = 102,015,871,531.26
  5. Step 5: Solve for x
    x = 102,015,871,531.26/404,792.60
  6. Step 6: Final answer
    x = 252,020.10

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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.