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Finding the Fourth Proportional to 88,941.90, 133,088.85 and 65,613.90

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Solution

The fourth proportional to 88,941.90, 133,088.85 and 65,613.90 is: 98,181.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,941.90 : 133,088.85 = 65,613.90 : x
  2. Step 2: Convert to fraction form
    88,941.90/133,088.85 = 65,613.90/x
  3. Step 3: Cross multiply
    88,941.90x = 133,088.85 × 65,613.90
  4. Step 4: Simplify right side
    88,941.90x = 8,732,478,495.02
  5. Step 5: Solve for x
    x = 8,732,478,495.02/88,941.90
  6. Step 6: Final answer
    x = 98,181.83

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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.