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Finding the Fourth Proportional to 73,507.79, 110,231.99 and 28,505.45

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Solution

The fourth proportional to 73,507.79, 110,231.99 and 28,505.45 is: 42,746.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,507.79 : 110,231.99 = 28,505.45 : x
  2. Step 2: Convert to fraction form
    73,507.79/110,231.99 = 28,505.45/x
  3. Step 3: Cross multiply
    73,507.79x = 110,231.99 × 28,505.45
  4. Step 4: Simplify right side
    73,507.79x = 3,142,211,999.45
  5. Step 5: Solve for x
    x = 3,142,211,999.45/73,507.79
  6. Step 6: Final answer
    x = 42,746.66

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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.