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Finding the Fourth Proportional to 92,850.94, 128,135.82 and 50,409.50

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Solution

The fourth proportional to 92,850.94, 128,135.82 and 50,409.50 is: 69,565.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,850.94 : 128,135.82 = 50,409.50 : x
  2. Step 2: Convert to fraction form
    92,850.94/128,135.82 = 50,409.50/x
  3. Step 3: Cross multiply
    92,850.94x = 128,135.82 × 50,409.50
  4. Step 4: Simplify right side
    92,850.94x = 6,459,262,618.29
  5. Step 5: Solve for x
    x = 6,459,262,618.29/92,850.94
  6. Step 6: Final answer
    x = 69,565.94

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1.5x scale

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.