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Finding the Fourth Proportional to 92,911.86, 128,208.96 and 52,617.60

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Solution

The fourth proportional to 92,911.86, 128,208.96 and 52,617.60 is: 72,606.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,911.86 : 128,208.96 = 52,617.60 : x
  2. Step 2: Convert to fraction form
    92,911.86/128,208.96 = 52,617.60/x
  3. Step 3: Cross multiply
    92,911.86x = 128,208.96 × 52,617.60
  4. Step 4: Simplify right side
    92,911.86x = 6,746,047,773.70
  5. Step 5: Solve for x
    x = 6,746,047,773.70/92,911.86
  6. Step 6: Final answer
    x = 72,606.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.