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Finding the Fourth Proportional to 70,337.84, 105,528.36 and 28,788.08

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Solution

The fourth proportional to 70,337.84, 105,528.36 and 28,788.08 is: 43,190.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,337.84 : 105,528.36 = 28,788.08 : x
  2. Step 2: Convert to fraction form
    70,337.84/105,528.36 = 28,788.08/x
  3. Step 3: Cross multiply
    70,337.84x = 105,528.36 × 28,788.08
  4. Step 4: Simplify right side
    70,337.84x = 3,037,958,869.95
  5. Step 5: Solve for x
    x = 3,037,958,869.95/70,337.84
  6. Step 6: Final answer
    x = 43,190.96

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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.