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Finding the Fourth Proportional to 75,751.61, 113,528.99 and 74,570.63

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Solution

The fourth proportional to 75,751.61, 113,528.99 and 74,570.63 is: 111,759.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,751.61 : 113,528.99 = 74,570.63 : x
  2. Step 2: Convert to fraction form
    75,751.61/113,528.99 = 74,570.63/x
  3. Step 3: Cross multiply
    75,751.61x = 113,528.99 × 74,570.63
  4. Step 4: Simplify right side
    75,751.61x = 8,465,927,926.35
  5. Step 5: Solve for x
    x = 8,465,927,926.35/75,751.61
  6. Step 6: Final answer
    x = 111,759.06

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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.