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Finding the Fourth Proportional to 35,367.96, 48,816.90 and 21,931.32

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Solution

The fourth proportional to 35,367.96, 48,816.90 and 21,931.32 is: 30,270.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,367.96 : 48,816.90 = 21,931.32 : x
  2. Step 2: Convert to fraction form
    35,367.96/48,816.90 = 21,931.32/x
  3. Step 3: Cross multiply
    35,367.96x = 48,816.90 × 21,931.32
  4. Step 4: Simplify right side
    35,367.96x = 1,070,619,055.31
  5. Step 5: Solve for x
    x = 1,070,619,055.31/35,367.96
  6. Step 6: Final answer
    x = 30,270.87

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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.