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Finding the Fourth Proportional to 35,486.52, 48,969.15 and 20,368.54

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Solution

The fourth proportional to 35,486.52, 48,969.15 and 20,368.54 is: 28,107.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,486.52 : 48,969.15 = 20,368.54 : x
  2. Step 2: Convert to fraction form
    35,486.52/48,969.15 = 20,368.54/x
  3. Step 3: Cross multiply
    35,486.52x = 48,969.15 × 20,368.54
  4. Step 4: Simplify right side
    35,486.52x = 997,430,090.54
  5. Step 5: Solve for x
    x = 997,430,090.54/35,486.52
  6. Step 6: Final answer
    x = 28,107.30

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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.