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Finding the Fourth Proportional to 65,867.85, 90,896.70 and 37,574.01

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Solution

The fourth proportional to 65,867.85, 90,896.70 and 37,574.01 is: 51,851.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,867.85 : 90,896.70 = 37,574.01 : x
  2. Step 2: Convert to fraction form
    65,867.85/90,896.70 = 37,574.01/x
  3. Step 3: Cross multiply
    65,867.85x = 90,896.70 × 37,574.01
  4. Step 4: Simplify right side
    65,867.85x = 3,415,353,514.77
  5. Step 5: Solve for x
    x = 3,415,353,514.77/65,867.85
  6. Step 6: Final answer
    x = 51,851.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.