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Finding the Fourth Proportional to 212,097.92, 318,144.96 and 64,353.92

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Solution

The fourth proportional to 212,097.92, 318,144.96 and 64,353.92 is: 96,530.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,097.92 : 318,144.96 = 64,353.92 : x
  2. Step 2: Convert to fraction form
    212,097.92/318,144.96 = 64,353.92/x
  3. Step 3: Cross multiply
    212,097.92x = 318,144.96 × 64,353.92
  4. Step 4: Simplify right side
    212,097.92x = 20,473,875,304.24
  5. Step 5: Solve for x
    x = 20,473,875,304.24/212,097.92
  6. Step 6: Final answer
    x = 96,530.30

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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.