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Finding the Fourth Proportional to 65,641.69, 98,446.08 and 18,894.57

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Solution

The fourth proportional to 65,641.69, 98,446.08 and 18,894.57 is: 28,337.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,641.69 : 98,446.08 = 18,894.57 : x
  2. Step 2: Convert to fraction form
    65,641.69/98,446.08 = 18,894.57/x
  3. Step 3: Cross multiply
    65,641.69x = 98,446.08 × 18,894.57
  4. Step 4: Simplify right side
    65,641.69x = 1,860,096,051.47
  5. Step 5: Solve for x
    x = 1,860,096,051.47/65,641.69
  6. Step 6: Final answer
    x = 28,337.11

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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.