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Finding the Fourth Proportional to 157,408.59, 217,226.54 and 85,792.54

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Solution

The fourth proportional to 157,408.59, 217,226.54 and 85,792.54 is: 118,395.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,408.59 : 217,226.54 = 85,792.54 : x
  2. Step 2: Convert to fraction form
    157,408.59/217,226.54 = 85,792.54/x
  3. Step 3: Cross multiply
    157,408.59x = 217,226.54 × 85,792.54
  4. Step 4: Simplify right side
    157,408.59x = 18,636,416,622.01
  5. Step 5: Solve for x
    x = 18,636,416,622.01/157,408.59
  6. Step 6: Final answer
    x = 118,395.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.