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Finding the Fourth Proportional to 73,133.64, 109,700.46 and 20,544.93

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Solution

The fourth proportional to 73,133.64, 109,700.46 and 20,544.93 is: 30,817.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,133.64 : 109,700.46 = 20,544.93 : x
  2. Step 2: Convert to fraction form
    73,133.64/109,700.46 = 20,544.93/x
  3. Step 3: Cross multiply
    73,133.64x = 109,700.46 × 20,544.93
  4. Step 4: Simplify right side
    73,133.64x = 2,253,788,271.67
  5. Step 5: Solve for x
    x = 2,253,788,271.67/73,133.64
  6. Step 6: Final answer
    x = 30,817.40

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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.