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Finding the Fourth Proportional to 470,809.07, 649,688.92 and 255,947.25

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Solution

The fourth proportional to 470,809.07, 649,688.92 and 255,947.25 is: 353,192.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,809.07 : 649,688.92 = 255,947.25 : x
  2. Step 2: Convert to fraction form
    470,809.07/649,688.92 = 255,947.25/x
  3. Step 3: Cross multiply
    470,809.07x = 649,688.92 × 255,947.25
  4. Step 4: Simplify right side
    470,809.07x = 166,286,091,789.60
  5. Step 5: Solve for x
    x = 166,286,091,789.60/470,809.07
  6. Step 6: Final answer
    x = 353,192.20

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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.