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Finding the Fourth Proportional to 70,868.91, 106,305.81 and 37,543.89

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Solution

The fourth proportional to 70,868.91, 106,305.81 and 37,543.89 is: 56,317.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,868.91 : 106,305.81 = 37,543.89 : x
  2. Step 2: Convert to fraction form
    70,868.91/106,305.81 = 37,543.89/x
  3. Step 3: Cross multiply
    70,868.91x = 106,305.81 × 37,543.89
  4. Step 4: Simplify right side
    70,868.91x = 3,991,133,637.00
  5. Step 5: Solve for x
    x = 3,991,133,637.00/70,868.91
  6. Step 6: Final answer
    x = 56,317.13

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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.