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Finding the Fourth Proportional to 63,290.92, 94,900.84 and 21,148.80

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Solution

The fourth proportional to 63,290.92, 94,900.84 and 21,148.80 is: 31,711.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,290.92 : 94,900.84 = 21,148.80 : x
  2. Step 2: Convert to fraction form
    63,290.92/94,900.84 = 21,148.80/x
  3. Step 3: Cross multiply
    63,290.92x = 94,900.84 × 21,148.80
  4. Step 4: Simplify right side
    63,290.92x = 2,007,038,884.99
  5. Step 5: Solve for x
    x = 2,007,038,884.99/63,290.92
  6. Step 6: Final answer
    x = 31,711.32

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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.