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Finding the Fourth Proportional to 73,730.80, 110,477.40 and 66,732.40

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Solution

The fourth proportional to 73,730.80, 110,477.40 and 66,732.40 is: 99,991.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,730.80 : 110,477.40 = 66,732.40 : x
  2. Step 2: Convert to fraction form
    73,730.80/110,477.40 = 66,732.40/x
  3. Step 3: Cross multiply
    73,730.80x = 110,477.40 × 66,732.40
  4. Step 4: Simplify right side
    73,730.80x = 7,372,422,047.76
  5. Step 5: Solve for x
    x = 7,372,422,047.76/73,730.80
  6. Step 6: Final answer
    x = 99,991.08

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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.