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Finding the Fourth Proportional to 92,969.94, 128,297.81 and 50,528.78

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Solution

The fourth proportional to 92,969.94, 128,297.81 and 50,528.78 is: 69,729.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,969.94 : 128,297.81 = 50,528.78 : x
  2. Step 2: Convert to fraction form
    92,969.94/128,297.81 = 50,528.78/x
  3. Step 3: Cross multiply
    92,969.94x = 128,297.81 × 50,528.78
  4. Step 4: Simplify right side
    92,969.94x = 6,482,730,921.84
  5. Step 5: Solve for x
    x = 6,482,730,921.84/92,969.94
  6. Step 6: Final answer
    x = 69,729.32

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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.