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Finding the Fourth Proportional to 70,853.60, 97,788.72 and 53,829.92

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Solution

The fourth proportional to 70,853.60, 97,788.72 and 53,829.92 is: 74,293.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,853.60 : 97,788.72 = 53,829.92 : x
  2. Step 2: Convert to fraction form
    70,853.60/97,788.72 = 53,829.92/x
  3. Step 3: Cross multiply
    70,853.60x = 97,788.72 × 53,829.92
  4. Step 4: Simplify right side
    70,853.60x = 5,263,958,974.50
  5. Step 5: Solve for x
    x = 5,263,958,974.50/70,853.60
  6. Step 6: Final answer
    x = 74,293.46

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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.