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Finding the Fourth Proportional to 70,764.90, 97,729.89 and 53,769.48

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Solution

The fourth proportional to 70,764.90, 97,729.89 and 53,769.48 is: 74,258.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,764.90 : 97,729.89 = 53,769.48 : x
  2. Step 2: Convert to fraction form
    70,764.90/97,729.89 = 53,769.48/x
  3. Step 3: Cross multiply
    70,764.90x = 97,729.89 × 53,769.48
  4. Step 4: Simplify right side
    70,764.90x = 5,254,885,365.76
  5. Step 5: Solve for x
    x = 5,254,885,365.76/70,764.90
  6. Step 6: Final answer
    x = 74,258.36

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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.