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Finding the Fourth Proportional to 515,434.65, 711,323.77 and 321,956.91

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Solution

The fourth proportional to 515,434.65, 711,323.77 and 321,956.91 is: 444,315.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,434.65 : 711,323.77 = 321,956.91 : x
  2. Step 2: Convert to fraction form
    515,434.65/711,323.77 = 321,956.91/x
  3. Step 3: Cross multiply
    515,434.65x = 711,323.77 × 321,956.91
  4. Step 4: Simplify right side
    515,434.65x = 229,015,602,998.75
  5. Step 5: Solve for x
    x = 229,015,602,998.75/515,434.65
  6. Step 6: Final answer
    x = 444,315.50

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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.