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Finding the Fourth Proportional to 66,024.72, 98,964.18 and 28,578.42

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Solution

The fourth proportional to 66,024.72, 98,964.18 and 28,578.42 is: 42,836.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,024.72 : 98,964.18 = 28,578.42 : x
  2. Step 2: Convert to fraction form
    66,024.72/98,964.18 = 28,578.42/x
  3. Step 3: Cross multiply
    66,024.72x = 98,964.18 × 28,578.42
  4. Step 4: Simplify right side
    66,024.72x = 2,828,239,901.00
  5. Step 5: Solve for x
    x = 2,828,239,901.00/66,024.72
  6. Step 6: Final answer
    x = 42,836.08

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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.