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Finding the Fourth Proportional to 92,898.74, 128,201.64 and 52,611.50

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Solution

The fourth proportional to 92,898.74, 128,201.64 and 52,611.50 is: 72,604.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,898.74 : 128,201.64 = 52,611.50 : x
  2. Step 2: Convert to fraction form
    92,898.74/128,201.64 = 52,611.50/x
  3. Step 3: Cross multiply
    92,898.74x = 128,201.64 × 52,611.50
  4. Step 4: Simplify right side
    92,898.74x = 6,744,880,582.86
  5. Step 5: Solve for x
    x = 6,744,880,582.86/92,898.74
  6. Step 6: Final answer
    x = 72,604.65

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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.