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Finding the Fourth Proportional to 60,548.66, 90,823.50 and 21,105.70

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Solution

The fourth proportional to 60,548.66, 90,823.50 and 21,105.70 is: 31,658.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,548.66 : 90,823.50 = 21,105.70 : x
  2. Step 2: Convert to fraction form
    60,548.66/90,823.50 = 21,105.70/x
  3. Step 3: Cross multiply
    60,548.66x = 90,823.50 × 21,105.70
  4. Step 4: Simplify right side
    60,548.66x = 1,916,893,543.95
  5. Step 5: Solve for x
    x = 1,916,893,543.95/60,548.66
  6. Step 6: Final answer
    x = 31,658.73

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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.