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Finding the Fourth Proportional to 49,312.80, 73,969.20 and 43,869.60

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Solution

The fourth proportional to 49,312.80, 73,969.20 and 43,869.60 is: 65,804.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,312.80 : 73,969.20 = 43,869.60 : x
  2. Step 2: Convert to fraction form
    49,312.80/73,969.20 = 43,869.60/x
  3. Step 3: Cross multiply
    49,312.80x = 73,969.20 × 43,869.60
  4. Step 4: Simplify right side
    49,312.80x = 3,244,999,216.32
  5. Step 5: Solve for x
    x = 3,244,999,216.32/49,312.80
  6. Step 6: Final answer
    x = 65,804.40

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1.5x scale

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.