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Finding the Fourth Proportional to 70,764.88, 105,957.60 and 37,415.68

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Solution

The fourth proportional to 70,764.88, 105,957.60 and 37,415.68 is: 56,023.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,764.88 : 105,957.60 = 37,415.68 : x
  2. Step 2: Convert to fraction form
    70,764.88/105,957.60 = 37,415.68/x
  3. Step 3: Cross multiply
    70,764.88x = 105,957.60 × 37,415.68
  4. Step 4: Simplify right side
    70,764.88x = 3,964,475,655.17
  5. Step 5: Solve for x
    x = 3,964,475,655.17/70,764.88
  6. Step 6: Final answer
    x = 56,023.21

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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.