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Finding the Fourth Proportional to 60,584.67, 90,870.51 and 21,142.53

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Solution

The fourth proportional to 60,584.67, 90,870.51 and 21,142.53 is: 31,711.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,584.67 : 90,870.51 = 21,142.53 : x
  2. Step 2: Convert to fraction form
    60,584.67/90,870.51 = 21,142.53/x
  3. Step 3: Cross multiply
    60,584.67x = 90,870.51 × 21,142.53
  4. Step 4: Simplify right side
    60,584.67x = 1,921,232,483.79
  5. Step 5: Solve for x
    x = 1,921,232,483.79/60,584.67
  6. Step 6: Final answer
    x = 31,711.53

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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.