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Finding the Fourth Proportional to 469,170.12, 703,210.71 and 215,918.87

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Solution

The fourth proportional to 469,170.12, 703,210.71 and 215,918.87 is: 323,627.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,170.12 : 703,210.71 = 215,918.87 : x
  2. Step 2: Convert to fraction form
    469,170.12/703,210.71 = 215,918.87/x
  3. Step 3: Cross multiply
    469,170.12x = 703,210.71 × 215,918.87
  4. Step 4: Simplify right side
    469,170.12x = 151,836,459,168.74
  5. Step 5: Solve for x
    x = 151,836,459,168.74/469,170.12
  6. Step 6: Final answer
    x = 323,627.72

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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.