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Finding the Fourth Proportional to 65,793.10, 98,688.74 and 15,872.78

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Solution

The fourth proportional to 65,793.10, 98,688.74 and 15,872.78 is: 23,808.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,793.10 : 98,688.74 = 15,872.78 : x
  2. Step 2: Convert to fraction form
    65,793.10/98,688.74 = 15,872.78/x
  3. Step 3: Cross multiply
    65,793.10x = 98,688.74 × 15,872.78
  4. Step 4: Simplify right side
    65,793.10x = 1,566,464,590.51
  5. Step 5: Solve for x
    x = 1,566,464,590.51/65,793.10
  6. Step 6: Final answer
    x = 23,808.95

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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.