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Finding the Fourth Proportional to 70,558.40, 105,782.11 and 48,304.32

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Solution

The fourth proportional to 70,558.40, 105,782.11 and 48,304.32 is: 72,418.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,558.40 : 105,782.11 = 48,304.32 : x
  2. Step 2: Convert to fraction form
    70,558.40/105,782.11 = 48,304.32/x
  3. Step 3: Cross multiply
    70,558.40x = 105,782.11 × 48,304.32
  4. Step 4: Simplify right side
    70,558.40x = 5,109,732,891.72
  5. Step 5: Solve for x
    x = 5,109,732,891.72/70,558.40
  6. Step 6: Final answer
    x = 72,418.49

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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.