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Finding the Fourth Proportional to 570,705.92, 856,069.79 and 186,455.84

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Solution

The fourth proportional to 570,705.92, 856,069.79 and 186,455.84 is: 279,687.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,705.92 : 856,069.79 = 186,455.84 : x
  2. Step 2: Convert to fraction form
    570,705.92/856,069.79 = 186,455.84/x
  3. Step 3: Cross multiply
    570,705.92x = 856,069.79 × 186,455.84
  4. Step 4: Simplify right side
    570,705.92x = 159,619,206,580.45
  5. Step 5: Solve for x
    x = 159,619,206,580.45/570,705.92
  6. Step 6: Final answer
    x = 279,687.32

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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.