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Finding the Fourth Proportional to 212,120.76, 292,719.16 and 116,626.71

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Solution

The fourth proportional to 212,120.76, 292,719.16 and 116,626.71 is: 160,940.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,120.76 : 292,719.16 = 116,626.71 : x
  2. Step 2: Convert to fraction form
    212,120.76/292,719.16 = 116,626.71/x
  3. Step 3: Cross multiply
    212,120.76x = 292,719.16 × 116,626.71
  4. Step 4: Simplify right side
    212,120.76x = 34,138,873,316.56
  5. Step 5: Solve for x
    x = 34,138,873,316.56/212,120.76
  6. Step 6: Final answer
    x = 160,940.74

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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.