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Finding the Fourth Proportional to 470,892.30, 706,338.45 and 419,570.70

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Solution

The fourth proportional to 470,892.30, 706,338.45 and 419,570.70 is: 629,356.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,892.30 : 706,338.45 = 419,570.70 : x
  2. Step 2: Convert to fraction form
    470,892.30/706,338.45 = 419,570.70/x
  3. Step 3: Cross multiply
    470,892.30x = 706,338.45 × 419,570.70
  4. Step 4: Simplify right side
    470,892.30x = 296,358,917,903.42
  5. Step 5: Solve for x
    x = 296,358,917,903.42/470,892.30
  6. Step 6: Final answer
    x = 629,356.05

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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.