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Finding the Fourth Proportional to 470,719.55, 649,596.90 and 255,859.58

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Solution

The fourth proportional to 470,719.55, 649,596.90 and 255,859.58 is: 353,088.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,719.55 : 649,596.90 = 255,859.58 : x
  2. Step 2: Convert to fraction form
    470,719.55/649,596.90 = 255,859.58/x
  3. Step 3: Cross multiply
    470,719.55x = 649,596.90 × 255,859.58
  4. Step 4: Simplify right side
    470,719.55x = 166,205,590,003.30
  5. Step 5: Solve for x
    x = 166,205,590,003.30/470,719.55
  6. Step 6: Final answer
    x = 353,088.35

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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.