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Finding the Fourth Proportional to 60,583, 90,874.86 and 21,139.96

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Solution

The fourth proportional to 60,583, 90,874.86 and 21,139.96 is: 31,710.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,583 : 90,874.86 = 21,139.96 : x
  2. Step 2: Convert to fraction form
    60,583/90,874.86 = 21,139.96/x
  3. Step 3: Cross multiply
    60,583x = 90,874.86 × 21,139.96
  4. Step 4: Simplify right side
    60,583x = 1,921,090,905.41
  5. Step 5: Solve for x
    x = 1,921,090,905.41/60,583
  6. Step 6: Final answer
    x = 31,710.07

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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.