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Finding the Fourth Proportional to 70,987.15, 106,390.27 and 37,723.15

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Solution

The fourth proportional to 70,987.15, 106,390.27 and 37,723.15 is: 56,536.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,987.15 : 106,390.27 = 37,723.15 : x
  2. Step 2: Convert to fraction form
    70,987.15/106,390.27 = 37,723.15/x
  3. Step 3: Cross multiply
    70,987.15x = 106,390.27 × 37,723.15
  4. Step 4: Simplify right side
    70,987.15x = 4,013,376,113.75
  5. Step 5: Solve for x
    x = 4,013,376,113.75/70,987.15
  6. Step 6: Final answer
    x = 56,536.66

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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.