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Finding the Fourth Proportional to 666,353.06, 999,528.81 and 217,073.21

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Solution

The fourth proportional to 666,353.06, 999,528.81 and 217,073.21 is: 325,609.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,353.06 : 999,528.81 = 217,073.21 : x
  2. Step 2: Convert to fraction form
    666,353.06/999,528.81 = 217,073.21/x
  3. Step 3: Cross multiply
    666,353.06x = 999,528.81 × 217,073.21
  4. Step 4: Simplify right side
    666,353.06x = 216,970,922,276.54
  5. Step 5: Solve for x
    x = 216,970,922,276.54/666,353.06
  6. Step 6: Final answer
    x = 325,609.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.