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Finding the Fourth Proportional to 70,612.40, 106,091.40 and 53,116.40

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Solution

The fourth proportional to 70,612.40, 106,091.40 and 53,116.40 is: 79,804.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,612.40 : 106,091.40 = 53,116.40 : x
  2. Step 2: Convert to fraction form
    70,612.40/106,091.40 = 53,116.40/x
  3. Step 3: Cross multiply
    70,612.40x = 106,091.40 × 53,116.40
  4. Step 4: Simplify right side
    70,612.40x = 5,635,193,238.96
  5. Step 5: Solve for x
    x = 5,635,193,238.96/70,612.40
  6. Step 6: Final answer
    x = 79,804.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.