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Finding the Fourth Proportional to 65,790.78, 98,700.75 and 19,044.06

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Solution

The fourth proportional to 65,790.78, 98,700.75 and 19,044.06 is: 28,570.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,790.78 : 98,700.75 = 19,044.06 : x
  2. Step 2: Convert to fraction form
    65,790.78/98,700.75 = 19,044.06/x
  3. Step 3: Cross multiply
    65,790.78x = 98,700.75 × 19,044.06
  4. Step 4: Simplify right side
    65,790.78x = 1,879,663,005.05
  5. Step 5: Solve for x
    x = 1,879,663,005.05/65,790.78
  6. Step 6: Final answer
    x = 28,570.31

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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.