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Finding the Fourth Proportional to 289,376.24, 434,086.80 and 86,956.54

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Solution

The fourth proportional to 289,376.24, 434,086.80 and 86,956.54 is: 130,441.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,376.24 : 434,086.80 = 86,956.54 : x
  2. Step 2: Convert to fraction form
    289,376.24/434,086.80 = 86,956.54/x
  3. Step 3: Cross multiply
    289,376.24x = 434,086.80 × 86,956.54
  4. Step 4: Simplify right side
    289,376.24x = 37,746,686,187.67
  5. Step 5: Solve for x
    x = 37,746,686,187.67/289,376.24
  6. Step 6: Final answer
    x = 130,441.55

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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.