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Finding the Fourth Proportional to 64,030.71, 96,057.33 and 21,900.90

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Solution

The fourth proportional to 64,030.71, 96,057.33 and 21,900.90 is: 32,855.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,030.71 : 96,057.33 = 21,900.90 : x
  2. Step 2: Convert to fraction form
    64,030.71/96,057.33 = 21,900.90/x
  3. Step 3: Cross multiply
    64,030.71x = 96,057.33 × 21,900.90
  4. Step 4: Simplify right side
    64,030.71x = 2,103,741,978.60
  5. Step 5: Solve for x
    x = 2,103,741,978.60/64,030.71
  6. Step 6: Final answer
    x = 32,855.20

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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.