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Finding the Fourth Proportional to 470,627.60, 706,330.20 and 218,296.40

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Solution

The fourth proportional to 470,627.60, 706,330.20 and 218,296.40 is: 327,624.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,627.60 : 706,330.20 = 218,296.40 : x
  2. Step 2: Convert to fraction form
    470,627.60/706,330.20 = 218,296.40/x
  3. Step 3: Cross multiply
    470,627.60x = 706,330.20 × 218,296.40
  4. Step 4: Simplify right side
    470,627.60x = 154,189,339,871.28
  5. Step 5: Solve for x
    x = 154,189,339,871.28/470,627.60
  6. Step 6: Final answer
    x = 327,624.94

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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.