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Finding the Fourth Proportional to 61,343.20, 92,014.78 and 19,790.20

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Solution

The fourth proportional to 61,343.20, 92,014.78 and 19,790.20 is: 29,685.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,343.20 : 92,014.78 = 19,790.20 : x
  2. Step 2: Convert to fraction form
    61,343.20/92,014.78 = 19,790.20/x
  3. Step 3: Cross multiply
    61,343.20x = 92,014.78 × 19,790.20
  4. Step 4: Simplify right side
    61,343.20x = 1,820,990,899.16
  5. Step 5: Solve for x
    x = 1,820,990,899.16/61,343.20
  6. Step 6: Final answer
    x = 29,685.29

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1.5x scale

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.