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Finding the Fourth Proportional to 70,853.76, 97,792.20 and 40,658.58

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Solution

The fourth proportional to 70,853.76, 97,792.20 and 40,658.58 is: 56,116.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,853.76 : 97,792.20 = 40,658.58 : x
  2. Step 2: Convert to fraction form
    70,853.76/97,792.20 = 40,658.58/x
  3. Step 3: Cross multiply
    70,853.76x = 97,792.20 × 40,658.58
  4. Step 4: Simplify right side
    70,853.76x = 3,976,091,987.08
  5. Step 5: Solve for x
    x = 3,976,091,987.08/70,853.76
  6. Step 6: Final answer
    x = 56,116.88

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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.