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Finding the Fourth Proportional to 60,481.71, 90,763.85 and 21,038.43

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Solution

The fourth proportional to 60,481.71, 90,763.85 and 21,038.43 is: 31,572.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,481.71 : 90,763.85 = 21,038.43 : x
  2. Step 2: Convert to fraction form
    60,481.71/90,763.85 = 21,038.43/x
  3. Step 3: Cross multiply
    60,481.71x = 90,763.85 × 21,038.43
  4. Step 4: Simplify right side
    60,481.71x = 1,909,528,799.56
  5. Step 5: Solve for x
    x = 1,909,528,799.56/60,481.71
  6. Step 6: Final answer
    x = 31,572.00

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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.