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Finding the Fourth Proportional to 46,309.20, 69,528.60 and 28,813.20

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Solution

The fourth proportional to 46,309.20, 69,528.60 and 28,813.20 is: 43,260.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,309.20 : 69,528.60 = 28,813.20 : x
  2. Step 2: Convert to fraction form
    46,309.20/69,528.60 = 28,813.20/x
  3. Step 3: Cross multiply
    46,309.20x = 69,528.60 × 28,813.20
  4. Step 4: Simplify right side
    46,309.20x = 2,003,341,457.52
  5. Step 5: Solve for x
    x = 2,003,341,457.52/46,309.20
  6. Step 6: Final answer
    x = 43,260.12

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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.