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Finding the Fourth Proportional to 70,051.20, 105,017.64 and 32,591.92

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Solution

The fourth proportional to 70,051.20, 105,017.64 and 32,591.92 is: 48,860.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,051.20 : 105,017.64 = 32,591.92 : x
  2. Step 2: Convert to fraction form
    70,051.20/105,017.64 = 32,591.92/x
  3. Step 3: Cross multiply
    70,051.20x = 105,017.64 × 32,591.92
  4. Step 4: Simplify right side
    70,051.20x = 3,422,726,521.47
  5. Step 5: Solve for x
    x = 3,422,726,521.47/70,051.20
  6. Step 6: Final answer
    x = 48,860.36

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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.