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Finding the Fourth Proportional to 217,101.32, 299,598.06 and 121,608.92

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Solution

The fourth proportional to 217,101.32, 299,598.06 and 121,608.92 is: 167,819.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,101.32 : 299,598.06 = 121,608.92 : x
  2. Step 2: Convert to fraction form
    217,101.32/299,598.06 = 121,608.92/x
  3. Step 3: Cross multiply
    217,101.32x = 299,598.06 × 121,608.92
  4. Step 4: Simplify right side
    217,101.32x = 36,433,796,510.70
  5. Step 5: Solve for x
    x = 36,433,796,510.70/217,101.32
  6. Step 6: Final answer
    x = 167,819.32

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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.