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Finding the Fourth Proportional to 70,892.51, 97,845.81 and 40,698.23

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Solution

The fourth proportional to 70,892.51, 97,845.81 and 40,698.23 is: 56,171.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,892.51 : 97,845.81 = 40,698.23 : x
  2. Step 2: Convert to fraction form
    70,892.51/97,845.81 = 40,698.23/x
  3. Step 3: Cross multiply
    70,892.51x = 97,845.81 × 40,698.23
  4. Step 4: Simplify right side
    70,892.51x = 3,982,151,279.92
  5. Step 5: Solve for x
    x = 3,982,151,279.92/70,892.51
  6. Step 6: Final answer
    x = 56,171.68

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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.