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Finding the Fourth Proportional to 157,636.83, 217,536.79 and 86,015.62

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Solution

The fourth proportional to 157,636.83, 217,536.79 and 86,015.62 is: 118,700.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,636.83 : 217,536.79 = 86,015.62 : x
  2. Step 2: Convert to fraction form
    157,636.83/217,536.79 = 86,015.62/x
  3. Step 3: Cross multiply
    157,636.83x = 217,536.79 × 86,015.62
  4. Step 4: Simplify right side
    157,636.83x = 18,711,562,082.82
  5. Step 5: Solve for x
    x = 18,711,562,082.82/157,636.83
  6. Step 6: Final answer
    x = 118,700.44

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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.