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Finding the Fourth Proportional to 152,590.56, 210,571.20 and 84,607.80

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Solution

The fourth proportional to 152,590.56, 210,571.20 and 84,607.80 is: 116,756.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,590.56 : 210,571.20 = 84,607.80 : x
  2. Step 2: Convert to fraction form
    152,590.56/210,571.20 = 84,607.80/x
  3. Step 3: Cross multiply
    152,590.56x = 210,571.20 × 84,607.80
  4. Step 4: Simplify right side
    152,590.56x = 17,815,965,975.36
  5. Step 5: Solve for x
    x = 17,815,965,975.36/152,590.56
  6. Step 6: Final answer
    x = 116,756.67

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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.