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Finding the Fourth Proportional to 53,964.60, 80,946.90 and 48,278.40

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Solution

The fourth proportional to 53,964.60, 80,946.90 and 48,278.40 is: 72,417.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,964.60 : 80,946.90 = 48,278.40 : x
  2. Step 2: Convert to fraction form
    53,964.60/80,946.90 = 48,278.40/x
  3. Step 3: Cross multiply
    53,964.60x = 80,946.90 × 48,278.40
  4. Step 4: Simplify right side
    53,964.60x = 3,907,986,816.96
  5. Step 5: Solve for x
    x = 3,907,986,816.96/53,964.60
  6. Step 6: Final answer
    x = 72,417.60

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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.