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Finding the Fourth Proportional to 470,575.55, 649,381.16 and 255,708.47

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Solution

The fourth proportional to 470,575.55, 649,381.16 and 255,708.47 is: 352,870.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,575.55 : 649,381.16 = 255,708.47 : x
  2. Step 2: Convert to fraction form
    470,575.55/649,381.16 = 255,708.47/x
  3. Step 3: Cross multiply
    470,575.55x = 649,381.16 × 255,708.47
  4. Step 4: Simplify right side
    470,575.55x = 166,052,258,344.98
  5. Step 5: Solve for x
    x = 166,052,258,344.98/470,575.55
  6. Step 6: Final answer
    x = 352,870.56

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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.