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Finding the Fourth Proportional to 157,737.77, 217,678.86 and 86,119.43

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Solution

The fourth proportional to 157,737.77, 217,678.86 and 86,119.43 is: 118,845.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,737.77 : 217,678.86 = 86,119.43 : x
  2. Step 2: Convert to fraction form
    157,737.77/217,678.86 = 86,119.43/x
  3. Step 3: Cross multiply
    157,737.77x = 217,678.86 × 86,119.43
  4. Step 4: Simplify right side
    157,737.77x = 18,746,379,346.25
  5. Step 5: Solve for x
    x = 18,746,379,346.25/157,737.77
  6. Step 6: Final answer
    x = 118,845.22

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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.