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Finding the Fourth Proportional to 470,561.60, 705,842.40 and 189,934.40

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Solution

The fourth proportional to 470,561.60, 705,842.40 and 189,934.40 is: 284,901.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,561.60 : 705,842.40 = 189,934.40 : x
  2. Step 2: Convert to fraction form
    470,561.60/705,842.40 = 189,934.40/x
  3. Step 3: Cross multiply
    470,561.60x = 705,842.40 × 189,934.40
  4. Step 4: Simplify right side
    470,561.60x = 134,063,752,738.56
  5. Step 5: Solve for x
    x = 134,063,752,738.56/470,561.60
  6. Step 6: Final answer
    x = 284,901.60

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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.