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Finding the Fourth Proportional to 103,695.10, 155,451.45 and 61,471.10

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Solution

The fourth proportional to 103,695.10, 155,451.45 and 61,471.10 is: 92,152.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,695.10 : 155,451.45 = 61,471.10 : x
  2. Step 2: Convert to fraction form
    103,695.10/155,451.45 = 61,471.10/x
  3. Step 3: Cross multiply
    103,695.10x = 155,451.45 × 61,471.10
  4. Step 4: Simplify right side
    103,695.10x = 9,555,771,628.10
  5. Step 5: Solve for x
    x = 9,555,771,628.10/103,695.10
  6. Step 6: Final answer
    x = 92,152.59

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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.