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Finding the Fourth Proportional to 70,974.12, 97,842.48 and 55,840.68

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Solution

The fourth proportional to 70,974.12, 97,842.48 and 55,840.68 is: 76,980.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,974.12 : 97,842.48 = 55,840.68 : x
  2. Step 2: Convert to fraction form
    70,974.12/97,842.48 = 55,840.68/x
  3. Step 3: Cross multiply
    70,974.12x = 97,842.48 × 55,840.68
  4. Step 4: Simplify right side
    70,974.12x = 5,463,590,616.09
  5. Step 5: Solve for x
    x = 5,463,590,616.09/70,974.12
  6. Step 6: Final answer
    x = 76,980.04

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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.